131856640

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3323}}^1$

素因数の和:3375

約数の個数: 72

約数和(自身を含む): 326124288

約数和(自身を除く): 194267648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3323, 3968, 4960, 6646, 7936, 9920, 13292, 16615, 19840, 26584, 33230, 39680, 53168, 66460, 103013, 106336, 132920, 206026, 212672, 265840, 412052, 425344, 515065, 531680, 824104, 850688, 1030130, 1063360, 1648208, 2060260, 2126720, 3296416, 4120520, 4253440, 6592832, 8241040, 13185664, 16482080, 26371328, 32964160, 65928320, 131856640]

約数ペア:

[(1, 131856640), (2, 65928320), (4, 32964160), (5, 26371328), (8, 16482080), (10, 13185664), (16, 8241040), (20, 6592832), (31, 4253440), (32, 4120520), (40, 3296416), (62, 2126720), (64, 2060260), (80, 1648208), (124, 1063360), (128, 1030130), (155, 850688), (160, 824104), (248, 531680), (256, 515065), (310, 425344), (320, 412052), (496, 265840), (620, 212672), (640, 206026), (992, 132920), (1240, 106336), (1280, 103013), (1984, 66460), (2480, 53168), (3323, 39680), (3968, 33230), (4960, 26584), (6646, 19840), (7936, 16615), (9920, 13292)]