18079820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{241}}^1$

素因数の和:303

約数の個数: 72

約数和(自身を含む): 43257984

約数和(自身を除く): 25178164

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 121, 124, 155, 220, 241, 242, 310, 341, 482, 484, 605, 620, 682, 964, 1205, 1210, 1364, 1705, 2410, 2420, 2651, 3410, 3751, 4820, 5302, 6820, 7471, 7502, 10604, 13255, 14942, 15004, 18755, 26510, 29161, 29884, 37355, 37510, 53020, 58322, 74710, 75020, 82181, 116644, 145805, 149420, 164362, 291610, 328724, 410905, 583220, 821810, 903991, 1643620, 1807982, 3615964, 4519955, 9039910, 18079820]

約数ペア:

[(1, 18079820), (2, 9039910), (4, 4519955), (5, 3615964), (10, 1807982), (11, 1643620), (20, 903991), (22, 821810), (31, 583220), (44, 410905), (55, 328724), (62, 291610), (110, 164362), (121, 149420), (124, 145805), (155, 116644), (220, 82181), (241, 75020), (242, 74710), (310, 58322), (341, 53020), (482, 37510), (484, 37355), (605, 29884), (620, 29161), (682, 26510), (964, 18755), (1205, 15004), (1210, 14942), (1364, 13255), (1705, 10604), (2410, 7502), (2420, 7471), (2651, 6820), (3410, 5302), (3751, 4820)]