21813720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^3\times {\mathrm{37}}^1$

素因数の和:102

約数の個数: 128

約数和(自身を含む): 71409600

約数和(自身を除く): 49595880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 37, 40, 51, 60, 68, 74, 85, 102, 111, 120, 136, 148, 170, 185, 204, 222, 255, 289, 296, 340, 370, 408, 444, 510, 555, 578, 629, 680, 740, 867, 888, 1020, 1110, 1156, 1258, 1445, 1480, 1734, 1887, 2040, 2220, 2312, 2516, 2890, 3145, 3468, 3774, 4335, 4440, 4913, 5032, 5780, 6290, 6936, 7548, 8670, 9435, 9826, 10693, 11560, 12580, 14739, 15096, 17340, 18870, 19652, 21386, 24565, 25160, 29478, 32079, 34680, 37740, 39304, 42772, 49130, 53465, 58956, 64158, 73695, 75480, 85544, 98260, 106930, 117912, 128316, 147390, 160395, 181781, 196520, 213860, 256632, 294780, 320790, 363562, 427720, 545343, 589560, 641580, 727124, 908905, 1090686, 1283160, 1454248, 1817810, 2181372, 2726715, 3635620, 4362744, 5453430, 7271240, 10906860, 21813720]

約数ペア:

[(1, 21813720), (2, 10906860), (3, 7271240), (4, 5453430), (5, 4362744), (6, 3635620), (8, 2726715), (10, 2181372), (12, 1817810), (15, 1454248), (17, 1283160), (20, 1090686), (24, 908905), (30, 727124), (34, 641580), (37, 589560), (40, 545343), (51, 427720), (60, 363562), (68, 320790), (74, 294780), (85, 256632), (102, 213860), (111, 196520), (120, 181781), (136, 160395), (148, 147390), (170, 128316), (185, 117912), (204, 106930), (222, 98260), (255, 85544), (289, 75480), (296, 73695), (340, 64158), (370, 58956), (408, 53465), (444, 49130), (510, 42772), (555, 39304), (578, 37740), (629, 34680), (680, 32079), (740, 29478), (867, 25160), (888, 24565), (1020, 21386), (1110, 19652), (1156, 18870), (1258, 17340), (1445, 15096), (1480, 14739), (1734, 12580), (1887, 11560), (2040, 10693), (2220, 9826), (2312, 9435), (2516, 8670), (2890, 7548), (3145, 6936), (3468, 6290), (3774, 5780), (4335, 5032), (4440, 4913)]