20870628

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{389}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 31021212

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 263, 389, 526, 778, 789, 1052, 1167, 1556, 1578, 2334, 3156, 4471, 4668, 6613, 8942, 13226, 13413, 17884, 19839, 26452, 26826, 39678, 53652, 79356, 102307, 204614, 306921, 409228, 613842, 1227684, 1739219, 3478438, 5217657, 6956876, 10435314, 20870628]

約数ペア:

[(1, 20870628), (2, 10435314), (3, 6956876), (4, 5217657), (6, 3478438), (12, 1739219), (17, 1227684), (34, 613842), (51, 409228), (68, 306921), (102, 204614), (204, 102307), (263, 79356), (389, 53652), (526, 39678), (778, 26826), (789, 26452), (1052, 19839), (1167, 17884), (1556, 13413), (1578, 13226), (2334, 8942), (3156, 6613), (4471, 4668)]