20708870

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3251}}^1$

素因数の和:3285

約数の個数: 48

約数和(自身を含む): 46711728

約数和(自身を除く): 26002858

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 455, 490, 637, 910, 1274, 3185, 3251, 6370, 6502, 16255, 22757, 32510, 42263, 45514, 84526, 113785, 159299, 211315, 227570, 295841, 318598, 422630, 591682, 796495, 1479205, 1592990, 2070887, 2958410, 4141774, 10354435, 20708870]

約数ペア:

[(1, 20708870), (2, 10354435), (5, 4141774), (7, 2958410), (10, 2070887), (13, 1592990), (14, 1479205), (26, 796495), (35, 591682), (49, 422630), (65, 318598), (70, 295841), (91, 227570), (98, 211315), (130, 159299), (182, 113785), (245, 84526), (455, 45514), (490, 42263), (637, 32510), (910, 22757), (1274, 16255), (3185, 6502), (3251, 6370)]