123358640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{81157}}^1$

素因数の和:81189

約数の個数: 40

約数和(自身を含む): 301907760

約数和(自身を除く): 178549120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 81157, 162314, 324628, 405785, 649256, 811570, 1298512, 1541983, 1623140, 3083966, 3246280, 6167932, 6492560, 7709915, 12335864, 15419830, 24671728, 30839660, 61679320, 123358640]

約数ペア:

[(1, 123358640), (2, 61679320), (4, 30839660), (5, 24671728), (8, 15419830), (10, 12335864), (16, 7709915), (19, 6492560), (20, 6167932), (38, 3246280), (40, 3083966), (76, 1623140), (80, 1541983), (95, 1298512), (152, 811570), (190, 649256), (304, 405785), (380, 324628), (760, 162314), (1520, 81157)]