81562856

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{397}}^1\times {\mathrm{421}}^1$

素因数の和:885

約数の個数: 32

約数和(自身を含む): 156199080

約数和(自身を除く): 74636224

約数列:

[1, 2, 4, 8, 61, 122, 244, 397, 421, 488, 794, 842, 1588, 1684, 3176, 3368, 24217, 25681, 48434, 51362, 96868, 102724, 167137, 193736, 205448, 334274, 668548, 1337096, 10195357, 20390714, 40781428, 81562856]

約数ペア:

[(1, 81562856), (2, 40781428), (4, 20390714), (8, 10195357), (61, 1337096), (122, 668548), (244, 334274), (397, 205448), (421, 193736), (488, 167137), (794, 102724), (842, 96868), (1588, 51362), (1684, 48434), (3176, 25681), (3368, 24217)]