15640040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1583}}^1$

素因数の和:1626

約数の個数: 64

約数和(自身を含む): 39916800

約数和(自身を除く): 24276760

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1583, 1976, 2470, 3166, 4940, 6332, 7915, 9880, 12664, 15830, 20579, 30077, 31660, 41158, 60154, 63320, 82316, 102895, 120308, 150385, 164632, 205790, 240616, 300770, 391001, 411580, 601540, 782002, 823160, 1203080, 1564004, 1955005, 3128008, 3910010, 7820020, 15640040]

約数ペア:

[(1, 15640040), (2, 7820020), (4, 3910010), (5, 3128008), (8, 1955005), (10, 1564004), (13, 1203080), (19, 823160), (20, 782002), (26, 601540), (38, 411580), (40, 391001), (52, 300770), (65, 240616), (76, 205790), (95, 164632), (104, 150385), (130, 120308), (152, 102895), (190, 82316), (247, 63320), (260, 60154), (380, 41158), (494, 31660), (520, 30077), (760, 20579), (988, 15830), (1235, 12664), (1583, 9880), (1976, 7915), (2470, 6332), (3166, 4940)]