21474440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{677}}^1$

素因数の和:762

約数の個数: 64

約数和(自身を含む): 52965360

約数和(自身を除く): 31490920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 104, 122, 130, 244, 260, 305, 488, 520, 610, 677, 793, 1220, 1354, 1586, 2440, 2708, 3172, 3385, 3965, 5416, 6344, 6770, 7930, 8801, 13540, 15860, 17602, 27080, 31720, 35204, 41297, 44005, 70408, 82594, 88010, 165188, 176020, 206485, 330376, 352040, 412970, 536861, 825940, 1073722, 1651880, 2147444, 2684305, 4294888, 5368610, 10737220, 21474440]

約数ペア:

[(1, 21474440), (2, 10737220), (4, 5368610), (5, 4294888), (8, 2684305), (10, 2147444), (13, 1651880), (20, 1073722), (26, 825940), (40, 536861), (52, 412970), (61, 352040), (65, 330376), (104, 206485), (122, 176020), (130, 165188), (244, 88010), (260, 82594), (305, 70408), (488, 44005), (520, 41297), (610, 35204), (677, 31720), (793, 27080), (1220, 17602), (1354, 15860), (1586, 13540), (2440, 8801), (2708, 7930), (3172, 6770), (3385, 6344), (3965, 5416)]