21261338748

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1566559}}^1$

素因数の和:1566611

約数の個数: 72

約数和(自身を含む): 59873923200

約数和(自身を除く): 38612584452

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 29, 36, 39, 52, 58, 78, 87, 116, 117, 156, 174, 234, 261, 348, 377, 468, 522, 754, 1044, 1131, 1508, 2262, 3393, 4524, 6786, 13572, 1566559, 3133118, 4699677, 6266236, 9399354, 14099031, 18798708, 20365267, 28198062, 40730534, 45430211, 56396124, 61095801, 81461068, 90860422, 122191602, 136290633, 181720844, 183287403, 244383204, 272581266, 366574806, 408871899, 545162532, 590592743, 733149612, 817743798, 1181185486, 1635487596, 1771778229, 2362370972, 3543556458, 5315334687, 7087112916, 10630669374, 21261338748]

約数ペア:

[(1, 21261338748), (2, 10630669374), (3, 7087112916), (4, 5315334687), (6, 3543556458), (9, 2362370972), (12, 1771778229), (13, 1635487596), (18, 1181185486), (26, 817743798), (29, 733149612), (36, 590592743), (39, 545162532), (52, 408871899), (58, 366574806), (78, 272581266), (87, 244383204), (116, 183287403), (117, 181720844), (156, 136290633), (174, 122191602), (234, 90860422), (261, 81461068), (348, 61095801), (377, 56396124), (468, 45430211), (522, 40730534), (754, 28198062), (1044, 20365267), (1131, 18798708), (1508, 14099031), (2262, 9399354), (3393, 6266236), (4524, 4699677), (6786, 3133118), (13572, 1566559)]