213135220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{4261}}^1$

素因数の和:4372

約数の個数: 48

約数和(自身を含む): 466126416

約数和(自身を除く): 252991196

約数列:

[1, 2, 4, 5, 10, 20, 41, 61, 82, 122, 164, 205, 244, 305, 410, 610, 820, 1220, 2501, 4261, 5002, 8522, 10004, 12505, 17044, 21305, 25010, 42610, 50020, 85220, 174701, 259921, 349402, 519842, 698804, 873505, 1039684, 1299605, 1747010, 2599210, 3494020, 5198420, 10656761, 21313522, 42627044, 53283805, 106567610, 213135220]

約数ペア:

[(1, 213135220), (2, 106567610), (4, 53283805), (5, 42627044), (10, 21313522), (20, 10656761), (41, 5198420), (61, 3494020), (82, 2599210), (122, 1747010), (164, 1299605), (205, 1039684), (244, 873505), (305, 698804), (410, 519842), (610, 349402), (820, 259921), (1220, 174701), (2501, 85220), (4261, 50020), (5002, 42610), (8522, 25010), (10004, 21305), (12505, 17044)]