155979440

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{31963}}^1$

素因数の和:32037

約数の個数: 40

約数和(自身を含む): 368608848

約数和(自身を除く): 212629408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 31963, 63926, 127852, 159815, 255704, 319630, 511408, 639260, 1278520, 1949743, 2557040, 3899486, 7798972, 9748715, 15597944, 19497430, 31195888, 38994860, 77989720, 155979440]

約数ペア:

[(1, 155979440), (2, 77989720), (4, 38994860), (5, 31195888), (8, 19497430), (10, 15597944), (16, 9748715), (20, 7798972), (40, 3899486), (61, 2557040), (80, 1949743), (122, 1278520), (244, 639260), (305, 511408), (488, 319630), (610, 255704), (976, 159815), (1220, 127852), (2440, 63926), (4880, 31963)]