20518150

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{239}}^1$

素因数の和:369

約数の個数: 48

約数和(自身を含む): 40979520

約数和(自身を除く): 20461370

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 101, 170, 202, 239, 425, 478, 505, 850, 1010, 1195, 1717, 2390, 2525, 3434, 4063, 5050, 5975, 8126, 8585, 11950, 17170, 20315, 24139, 40630, 42925, 48278, 85850, 101575, 120695, 203150, 241390, 410363, 603475, 820726, 1206950, 2051815, 4103630, 10259075, 20518150]

約数ペア:

[(1, 20518150), (2, 10259075), (5, 4103630), (10, 2051815), (17, 1206950), (25, 820726), (34, 603475), (50, 410363), (85, 241390), (101, 203150), (170, 120695), (202, 101575), (239, 85850), (425, 48278), (478, 42925), (505, 40630), (850, 24139), (1010, 20315), (1195, 17170), (1717, 11950), (2390, 8585), (2525, 8126), (3434, 5975), (4063, 5050)]