81059240

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:450

約数の個数: 64

約数和(自身を含む): 187488000

約数和(自身を除く): 106428760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 139, 239, 244, 278, 305, 478, 488, 556, 610, 695, 956, 1112, 1195, 1220, 1390, 1912, 2390, 2440, 2780, 4780, 5560, 8479, 9560, 14579, 16958, 29158, 33221, 33916, 42395, 58316, 66442, 67832, 72895, 84790, 116632, 132884, 145790, 166105, 169580, 265768, 291580, 332210, 339160, 583160, 664420, 1328840, 2026481, 4052962, 8105924, 10132405, 16211848, 20264810, 40529620, 81059240]

約数ペア:

[(1, 81059240), (2, 40529620), (4, 20264810), (5, 16211848), (8, 10132405), (10, 8105924), (20, 4052962), (40, 2026481), (61, 1328840), (122, 664420), (139, 583160), (239, 339160), (244, 332210), (278, 291580), (305, 265768), (478, 169580), (488, 166105), (556, 145790), (610, 132884), (695, 116632), (956, 84790), (1112, 72895), (1195, 67832), (1220, 66442), (1390, 58316), (1912, 42395), (2390, 33916), (2440, 33221), (2780, 29158), (4780, 16958), (5560, 14579), (8479, 9560)]