21663620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1669}}^1$

素因数の和:1748

約数の個数: 48

約数和(自身を含む): 50500800

約数和(自身を除く): 28837180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 59, 110, 118, 220, 236, 295, 590, 649, 1180, 1298, 1669, 2596, 3245, 3338, 6490, 6676, 8345, 12980, 16690, 18359, 33380, 36718, 73436, 91795, 98471, 183590, 196942, 367180, 393884, 492355, 984710, 1083181, 1969420, 2166362, 4332724, 5415905, 10831810, 21663620]

約数ペア:

[(1, 21663620), (2, 10831810), (4, 5415905), (5, 4332724), (10, 2166362), (11, 1969420), (20, 1083181), (22, 984710), (44, 492355), (55, 393884), (59, 367180), (110, 196942), (118, 183590), (220, 98471), (236, 91795), (295, 73436), (590, 36718), (649, 33380), (1180, 18359), (1298, 16690), (1669, 12980), (2596, 8345), (3245, 6676), (3338, 6490)]