81461716

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:341

約数の個数: 72

約数和(自身を含む): 174666240

約数和(自身を除く): 93204524

約数列:

[1, 2, 4, 7, 14, 28, 37, 47, 49, 74, 94, 98, 148, 188, 196, 239, 259, 329, 478, 518, 658, 956, 1036, 1316, 1673, 1739, 1813, 2303, 3346, 3478, 3626, 4606, 6692, 6956, 7252, 8843, 9212, 11233, 11711, 12173, 17686, 22466, 23422, 24346, 35372, 44932, 46844, 48692, 61901, 78631, 85211, 123802, 157262, 170422, 247604, 314524, 340844, 415621, 433307, 550417, 831242, 866614, 1100834, 1662484, 1733228, 2201668, 2909347, 5818694, 11637388, 20365429, 40730858, 81461716]

約数ペア:

[(1, 81461716), (2, 40730858), (4, 20365429), (7, 11637388), (14, 5818694), (28, 2909347), (37, 2201668), (47, 1733228), (49, 1662484), (74, 1100834), (94, 866614), (98, 831242), (148, 550417), (188, 433307), (196, 415621), (239, 340844), (259, 314524), (329, 247604), (478, 170422), (518, 157262), (658, 123802), (956, 85211), (1036, 78631), (1316, 61901), (1673, 48692), (1739, 46844), (1813, 44932), (2303, 35372), (3346, 24346), (3478, 23422), (3626, 22466), (4606, 17686), (6692, 12173), (6956, 11711), (7252, 11233), (8843, 9212)]