4389220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 10233216

約数和(自身を除く): 5843996

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 281, 284, 355, 562, 710, 781, 1124, 1405, 1420, 1562, 2810, 3091, 3124, 3905, 5620, 6182, 7810, 12364, 15455, 15620, 19951, 30910, 39902, 61820, 79804, 99755, 199510, 219461, 399020, 438922, 877844, 1097305, 2194610, 4389220]

約数ペア:

[(1, 4389220), (2, 2194610), (4, 1097305), (5, 877844), (10, 438922), (11, 399020), (20, 219461), (22, 199510), (44, 99755), (55, 79804), (71, 61820), (110, 39902), (142, 30910), (220, 19951), (281, 15620), (284, 15455), (355, 12364), (562, 7810), (710, 6182), (781, 5620), (1124, 3905), (1405, 3124), (1420, 3091), (1562, 2810)]