81356436

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{6869}}^1$

素因数の和:6933

約数の個数: 72

約数和(自身を含む): 240065280

約数和(自身を除く): 158708844

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 47, 63, 84, 94, 126, 141, 188, 252, 282, 329, 423, 564, 658, 846, 987, 1316, 1692, 1974, 2961, 3948, 5922, 6869, 11844, 13738, 20607, 27476, 41214, 48083, 61821, 82428, 96166, 123642, 144249, 192332, 247284, 288498, 322843, 432747, 576996, 645686, 865494, 968529, 1291372, 1730988, 1937058, 2259901, 2905587, 3874116, 4519802, 5811174, 6779703, 9039604, 11622348, 13559406, 20339109, 27118812, 40678218, 81356436]

約数ペア:

[(1, 81356436), (2, 40678218), (3, 27118812), (4, 20339109), (6, 13559406), (7, 11622348), (9, 9039604), (12, 6779703), (14, 5811174), (18, 4519802), (21, 3874116), (28, 2905587), (36, 2259901), (42, 1937058), (47, 1730988), (63, 1291372), (84, 968529), (94, 865494), (126, 645686), (141, 576996), (188, 432747), (252, 322843), (282, 288498), (329, 247284), (423, 192332), (564, 144249), (658, 123642), (846, 96166), (987, 82428), (1316, 61821), (1692, 48083), (1974, 41214), (2961, 27476), (3948, 20607), (5922, 13738), (6869, 11844)]