21567420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17117}}^1$

素因数の和:17139

約数の個数: 72

約数和(自身を含む): 74771424

約数和(自身を除く): 53204004

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 17117, 34234, 51351, 68468, 85585, 102702, 119819, 154053, 171170, 205404, 239638, 256755, 308106, 342340, 359457, 479276, 513510, 599095, 616212, 718914, 770265, 1027020, 1078371, 1198190, 1437828, 1540530, 1797285, 2156742, 2396380, 3081060, 3594570, 4313484, 5391855, 7189140, 10783710, 21567420]

約数ペア:

[(1, 21567420), (2, 10783710), (3, 7189140), (4, 5391855), (5, 4313484), (6, 3594570), (7, 3081060), (9, 2396380), (10, 2156742), (12, 1797285), (14, 1540530), (15, 1437828), (18, 1198190), (20, 1078371), (21, 1027020), (28, 770265), (30, 718914), (35, 616212), (36, 599095), (42, 513510), (45, 479276), (60, 359457), (63, 342340), (70, 308106), (84, 256755), (90, 239638), (105, 205404), (126, 171170), (140, 154053), (180, 119819), (210, 102702), (252, 85585), (315, 68468), (420, 51351), (630, 34234), (1260, 17117)]