128768560

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{26387}}^1$

素因数の和:26461

約数の個数: 40

約数和(自身を含む): 304306416

約数和(自身を除く): 175537856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 26387, 52774, 105548, 131935, 211096, 263870, 422192, 527740, 1055480, 1609607, 2110960, 3219214, 6438428, 8048035, 12876856, 16096070, 25753712, 32192140, 64384280, 128768560]

約数ペア:

[(1, 128768560), (2, 64384280), (4, 32192140), (5, 25753712), (8, 16096070), (10, 12876856), (16, 8048035), (20, 6438428), (40, 3219214), (61, 2110960), (80, 1609607), (122, 1055480), (244, 527740), (305, 422192), (488, 263870), (610, 211096), (976, 131935), (1220, 105548), (2440, 52774), (4880, 26387)]