21717810

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:252

約数の個数: 96

約数和(自身を含む): 59894640

約数和(自身を除く): 38176830

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 29, 30, 45, 53, 58, 87, 90, 106, 145, 157, 159, 174, 261, 265, 290, 314, 318, 435, 471, 477, 522, 530, 785, 795, 870, 942, 954, 1305, 1413, 1537, 1570, 1590, 2355, 2385, 2610, 2826, 3074, 4553, 4611, 4710, 4770, 7065, 7685, 8321, 9106, 9222, 13659, 13833, 14130, 15370, 16642, 22765, 23055, 24963, 27318, 27666, 40977, 41605, 45530, 46110, 49926, 68295, 69165, 74889, 81954, 83210, 124815, 136590, 138330, 149778, 204885, 241309, 249630, 374445, 409770, 482618, 723927, 748890, 1206545, 1447854, 2171781, 2413090, 3619635, 4343562, 7239270, 10858905, 21717810]

約数ペア:

[(1, 21717810), (2, 10858905), (3, 7239270), (5, 4343562), (6, 3619635), (9, 2413090), (10, 2171781), (15, 1447854), (18, 1206545), (29, 748890), (30, 723927), (45, 482618), (53, 409770), (58, 374445), (87, 249630), (90, 241309), (106, 204885), (145, 149778), (157, 138330), (159, 136590), (174, 124815), (261, 83210), (265, 81954), (290, 74889), (314, 69165), (318, 68295), (435, 49926), (471, 46110), (477, 45530), (522, 41605), (530, 40977), (785, 27666), (795, 27318), (870, 24963), (942, 23055), (954, 22765), (1305, 16642), (1413, 15370), (1537, 14130), (1570, 13833), (1590, 13659), (2355, 9222), (2385, 9106), (2610, 8321), (2826, 7685), (3074, 7065), (4553, 4770), (4611, 4710)]