21917760

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{79}}^1$

素因数の和:133

約数の個数: 168

約数和(自身を含む): 74858880

約数和(自身を除く): 52941120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 64, 68, 79, 80, 85, 96, 102, 120, 136, 158, 160, 170, 192, 204, 237, 240, 255, 272, 289, 316, 320, 340, 395, 408, 474, 480, 510, 544, 578, 632, 680, 790, 816, 867, 948, 960, 1020, 1088, 1156, 1185, 1264, 1343, 1360, 1445, 1580, 1632, 1734, 1896, 2040, 2312, 2370, 2528, 2686, 2720, 2890, 3160, 3264, 3468, 3792, 4029, 4080, 4335, 4624, 4740, 5056, 5372, 5440, 5780, 6320, 6715, 6936, 7584, 8058, 8160, 8670, 9248, 9480, 10744, 11560, 12640, 13430, 13872, 15168, 16116, 16320, 17340, 18496, 18960, 20145, 21488, 22831, 23120, 25280, 26860, 27744, 32232, 34680, 37920, 40290, 42976, 45662, 46240, 53720, 55488, 64464, 68493, 69360, 75840, 80580, 85952, 91324, 92480, 107440, 114155, 128928, 136986, 138720, 161160, 182648, 214880, 228310, 257856, 273972, 277440, 322320, 342465, 365296, 429760, 456620, 547944, 644640, 684930, 730592, 913240, 1095888, 1289280, 1369860, 1461184, 1826480, 2191776, 2739720, 3652960, 4383552, 5479440, 7305920, 10958880, 21917760]

約数ペア:

[(1, 21917760), (2, 10958880), (3, 7305920), (4, 5479440), (5, 4383552), (6, 3652960), (8, 2739720), (10, 2191776), (12, 1826480), (15, 1461184), (16, 1369860), (17, 1289280), (20, 1095888), (24, 913240), (30, 730592), (32, 684930), (34, 644640), (40, 547944), (48, 456620), (51, 429760), (60, 365296), (64, 342465), (68, 322320), (79, 277440), (80, 273972), (85, 257856), (96, 228310), (102, 214880), (120, 182648), (136, 161160), (158, 138720), (160, 136986), (170, 128928), (192, 114155), (204, 107440), (237, 92480), (240, 91324), (255, 85952), (272, 80580), (289, 75840), (316, 69360), (320, 68493), (340, 64464), (395, 55488), (408, 53720), (474, 46240), (480, 45662), (510, 42976), (544, 40290), (578, 37920), (632, 34680), (680, 32232), (790, 27744), (816, 26860), (867, 25280), (948, 23120), (960, 22831), (1020, 21488), (1088, 20145), (1156, 18960), (1185, 18496), (1264, 17340), (1343, 16320), (1360, 16116), (1445, 15168), (1580, 13872), (1632, 13430), (1734, 12640), (1896, 11560), (2040, 10744), (2312, 9480), (2370, 9248), (2528, 8670), (2686, 8160), (2720, 8058), (2890, 7584), (3160, 6936), (3264, 6715), (3468, 6320), (3792, 5780), (4029, 5440), (4080, 5372), (4335, 5056), (4624, 4740)]