81983520

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{197}}^1$

素因数の和:252

約数の個数: 216

約数和(自身を含む): 298702404

約数和(自身を除く): 216718884

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 32, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 96, 102, 120, 136, 144, 153, 160, 170, 180, 197, 204, 240, 255, 272, 288, 289, 306, 340, 360, 394, 408, 480, 510, 544, 578, 591, 612, 680, 720, 765, 788, 816, 867, 985, 1020, 1156, 1182, 1224, 1360, 1440, 1445, 1530, 1576, 1632, 1734, 1773, 1970, 2040, 2312, 2364, 2448, 2601, 2720, 2890, 2955, 3060, 3152, 3349, 3468, 3546, 3940, 4080, 4335, 4624, 4728, 4896, 5202, 5780, 5910, 6120, 6304, 6698, 6936, 7092, 7880, 8160, 8670, 8865, 9248, 9456, 10047, 10404, 11560, 11820, 12240, 13005, 13396, 13872, 14184, 15760, 16745, 17340, 17730, 18912, 20094, 20808, 23120, 23640, 24480, 26010, 26792, 27744, 28368, 30141, 31520, 33490, 34680, 35460, 40188, 41616, 46240, 47280, 50235, 52020, 53584, 56736, 56933, 60282, 66980, 69360, 70920, 80376, 83232, 94560, 100470, 104040, 107168, 113866, 120564, 133960, 138720, 141840, 150705, 160752, 170799, 200940, 208080, 227732, 241128, 267920, 283680, 284665, 301410, 321504, 341598, 401880, 416160, 455464, 482256, 512397, 535840, 569330, 602820, 683196, 803760, 853995, 910928, 964512, 1024794, 1138660, 1205640, 1366392, 1607520, 1707990, 1821856, 2049588, 2277320, 2411280, 2561985, 2732784, 3415980, 4099176, 4554640, 4822560, 5123970, 5465568, 6831960, 8198352, 9109280, 10247940, 13663920, 16396704, 20495880, 27327840, 40991760, 81983520]

約数ペア:

[(1, 81983520), (2, 40991760), (3, 27327840), (4, 20495880), (5, 16396704), (6, 13663920), (8, 10247940), (9, 9109280), (10, 8198352), (12, 6831960), (15, 5465568), (16, 5123970), (17, 4822560), (18, 4554640), (20, 4099176), (24, 3415980), (30, 2732784), (32, 2561985), (34, 2411280), (36, 2277320), (40, 2049588), (45, 1821856), (48, 1707990), (51, 1607520), (60, 1366392), (68, 1205640), (72, 1138660), (80, 1024794), (85, 964512), (90, 910928), (96, 853995), (102, 803760), (120, 683196), (136, 602820), (144, 569330), (153, 535840), (160, 512397), (170, 482256), (180, 455464), (197, 416160), (204, 401880), (240, 341598), (255, 321504), (272, 301410), (288, 284665), (289, 283680), (306, 267920), (340, 241128), (360, 227732), (394, 208080), (408, 200940), (480, 170799), (510, 160752), (544, 150705), (578, 141840), (591, 138720), (612, 133960), (680, 120564), (720, 113866), (765, 107168), (788, 104040), (816, 100470), (867, 94560), (985, 83232), (1020, 80376), (1156, 70920), (1182, 69360), (1224, 66980), (1360, 60282), (1440, 56933), (1445, 56736), (1530, 53584), (1576, 52020), (1632, 50235), (1734, 47280), (1773, 46240), (1970, 41616), (2040, 40188), (2312, 35460), (2364, 34680), (2448, 33490), (2601, 31520), (2720, 30141), (2890, 28368), (2955, 27744), (3060, 26792), (3152, 26010), (3349, 24480), (3468, 23640), (3546, 23120), (3940, 20808), (4080, 20094), (4335, 18912), (4624, 17730), (4728, 17340), (4896, 16745), (5202, 15760), (5780, 14184), (5910, 13872), (6120, 13396), (6304, 13005), (6698, 12240), (6936, 11820), (7092, 11560), (7880, 10404), (8160, 10047), (8670, 9456), (8865, 9248)]