20518652

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:367

約数の個数: 72

約数和(自身を含む): 47190528

約数和(自身を除く): 26671876

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 49, 62, 77, 98, 124, 154, 196, 217, 307, 308, 341, 434, 539, 614, 682, 868, 1078, 1228, 1364, 1519, 2149, 2156, 2387, 3038, 3377, 4298, 4774, 6076, 6754, 8596, 9517, 9548, 13508, 15043, 16709, 19034, 23639, 30086, 33418, 38068, 47278, 60172, 66619, 66836, 94556, 104687, 133238, 165473, 209374, 266476, 330946, 418748, 466333, 661892, 732809, 932666, 1465618, 1865332, 2931236, 5129663, 10259326, 20518652]

約数ペア:

[(1, 20518652), (2, 10259326), (4, 5129663), (7, 2931236), (11, 1865332), (14, 1465618), (22, 932666), (28, 732809), (31, 661892), (44, 466333), (49, 418748), (62, 330946), (77, 266476), (98, 209374), (124, 165473), (154, 133238), (196, 104687), (217, 94556), (307, 66836), (308, 66619), (341, 60172), (434, 47278), (539, 38068), (614, 33418), (682, 30086), (868, 23639), (1078, 19034), (1228, 16709), (1364, 15043), (1519, 13508), (2149, 9548), (2156, 9517), (2387, 8596), (3038, 6754), (3377, 6076), (4298, 4774)]