7820020

素因数分解:

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

素因数の和:1624

約数の個数: 48

約数和(自身を含む): 18627840

約数和(自身を除く): 10807820

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 1583, 2470, 3166, 4940, 6332, 7915, 15830, 20579, 30077, 31660, 41158, 60154, 82316, 102895, 120308, 150385, 205790, 300770, 391001, 411580, 601540, 782002, 1564004, 1955005, 3910010, 7820020]

約数ペア:

[(1, 7820020), (2, 3910010), (4, 1955005), (5, 1564004), (10, 782002), (13, 601540), (19, 411580), (20, 391001), (26, 300770), (38, 205790), (52, 150385), (65, 120308), (76, 102895), (95, 82316), (130, 60154), (190, 41158), (247, 31660), (260, 30077), (380, 20579), (494, 15830), (988, 7915), (1235, 6332), (1583, 4940), (2470, 3166)]