66664880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{26881}}^1$

素因数の和:26925

約数の個数: 40

約数和(自身を含む): 160001664

約数和(自身を除く): 93336784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 26881, 53762, 107524, 134405, 215048, 268810, 430096, 537620, 833311, 1075240, 1666622, 2150480, 3333244, 4166555, 6666488, 8333110, 13332976, 16666220, 33332440, 66664880]

約数ペア:

[(1, 66664880), (2, 33332440), (4, 16666220), (5, 13332976), (8, 8333110), (10, 6666488), (16, 4166555), (20, 3333244), (31, 2150480), (40, 1666622), (62, 1075240), (80, 833311), (124, 537620), (155, 430096), (248, 268810), (310, 215048), (496, 134405), (620, 107524), (1240, 53762), (2480, 26881)]