81145988

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{557}}^1$

素因数の和:633

約数の個数: 72

約数和(自身を含む): 182863296

約数和(自身を除く): 101717308

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 43, 44, 77, 86, 121, 154, 172, 242, 301, 308, 473, 484, 557, 602, 847, 946, 1114, 1204, 1694, 1892, 2228, 3311, 3388, 3899, 5203, 6127, 6622, 7798, 10406, 12254, 13244, 15596, 20812, 23951, 24508, 36421, 42889, 47902, 67397, 72842, 85778, 95804, 134794, 145684, 167657, 171556, 263461, 269588, 335314, 471779, 526922, 670628, 943558, 1053844, 1844227, 1887116, 2898071, 3688454, 5796142, 7376908, 11592284, 20286497, 40572994, 81145988]

約数ペア:

[(1, 81145988), (2, 40572994), (4, 20286497), (7, 11592284), (11, 7376908), (14, 5796142), (22, 3688454), (28, 2898071), (43, 1887116), (44, 1844227), (77, 1053844), (86, 943558), (121, 670628), (154, 526922), (172, 471779), (242, 335314), (301, 269588), (308, 263461), (473, 171556), (484, 167657), (557, 145684), (602, 134794), (847, 95804), (946, 85778), (1114, 72842), (1204, 67397), (1694, 47902), (1892, 42889), (2228, 36421), (3311, 24508), (3388, 23951), (3899, 20812), (5203, 15596), (6127, 13244), (6622, 12254), (7798, 10406)]