21580778608

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{1201}}^1\times {\mathrm{8573}}^1$

素因数の和:9913

約数の個数: 40

約数和(自身を含む): 42171939216

約数和(自身を除く): 20591160608

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 1201, 2096, 2402, 4804, 8573, 9608, 17146, 19216, 34292, 68584, 137168, 157331, 314662, 629324, 1123063, 1258648, 2246126, 2517296, 4492252, 8984504, 10296173, 17969008, 20592346, 41184692, 82369384, 164738768, 1348798663, 2697597326, 5395194652, 10790389304, 21580778608]

約数ペア:

[(1, 21580778608), (2, 10790389304), (4, 5395194652), (8, 2697597326), (16, 1348798663), (131, 164738768), (262, 82369384), (524, 41184692), (1048, 20592346), (1201, 17969008), (2096, 10296173), (2402, 8984504), (4804, 4492252), (8573, 2517296), (9608, 2246126), (17146, 1258648), (19216, 1123063), (34292, 629324), (68584, 314662), (137168, 157331)]