21293520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{307}}^1$

素因数の和:357

約数の個数: 120

約数和(自身を含む): 70349664

約数和(自身を除く): 49056144

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 289, 307, 340, 408, 510, 578, 614, 680, 816, 867, 921, 1020, 1156, 1228, 1360, 1445, 1535, 1734, 1842, 2040, 2312, 2456, 2890, 3070, 3468, 3684, 4080, 4335, 4605, 4624, 4912, 5219, 5780, 6140, 6936, 7368, 8670, 9210, 10438, 11560, 12280, 13872, 14736, 15657, 17340, 18420, 20876, 23120, 24560, 26095, 31314, 34680, 36840, 41752, 52190, 62628, 69360, 73680, 78285, 83504, 88723, 104380, 125256, 156570, 177446, 208760, 250512, 266169, 313140, 354892, 417520, 443615, 532338, 626280, 709784, 887230, 1064676, 1252560, 1330845, 1419568, 1774460, 2129352, 2661690, 3548920, 4258704, 5323380, 7097840, 10646760, 21293520]

約数ペア:

[(1, 21293520), (2, 10646760), (3, 7097840), (4, 5323380), (5, 4258704), (6, 3548920), (8, 2661690), (10, 2129352), (12, 1774460), (15, 1419568), (16, 1330845), (17, 1252560), (20, 1064676), (24, 887230), (30, 709784), (34, 626280), (40, 532338), (48, 443615), (51, 417520), (60, 354892), (68, 313140), (80, 266169), (85, 250512), (102, 208760), (120, 177446), (136, 156570), (170, 125256), (204, 104380), (240, 88723), (255, 83504), (272, 78285), (289, 73680), (307, 69360), (340, 62628), (408, 52190), (510, 41752), (578, 36840), (614, 34680), (680, 31314), (816, 26095), (867, 24560), (921, 23120), (1020, 20876), (1156, 18420), (1228, 17340), (1360, 15657), (1445, 14736), (1535, 13872), (1734, 12280), (1842, 11560), (2040, 10438), (2312, 9210), (2456, 8670), (2890, 7368), (3070, 6936), (3468, 6140), (3684, 5780), (4080, 5219), (4335, 4912), (4605, 4624)]