17456980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 38278800

約数和(自身を除く): 20821820

約数列:

[1, 2, 4, 5, 10, 20, 41, 61, 82, 122, 164, 205, 244, 305, 349, 410, 610, 698, 820, 1220, 1396, 1745, 2501, 3490, 5002, 6980, 10004, 12505, 14309, 21289, 25010, 28618, 42578, 50020, 57236, 71545, 85156, 106445, 143090, 212890, 286180, 425780, 872849, 1745698, 3491396, 4364245, 8728490, 17456980]

約数ペア:

[(1, 17456980), (2, 8728490), (4, 4364245), (5, 3491396), (10, 1745698), (20, 872849), (41, 425780), (61, 286180), (82, 212890), (122, 143090), (164, 106445), (205, 85156), (244, 71545), (305, 57236), (349, 50020), (410, 42578), (610, 28618), (698, 25010), (820, 21289), (1220, 14309), (1396, 12505), (1745, 10004), (2501, 6980), (3490, 5002)]