81220356

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{18959}}^1$

素因数の和:18993

約数の個数: 72

約数和(自身を含む): 248451840

約数和(自身を除く): 167231484

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 28, 34, 36, 42, 51, 63, 68, 84, 102, 119, 126, 153, 204, 238, 252, 306, 357, 476, 612, 714, 1071, 1428, 2142, 4284, 18959, 37918, 56877, 75836, 113754, 132713, 170631, 227508, 265426, 322303, 341262, 398139, 530852, 644606, 682524, 796278, 966909, 1194417, 1289212, 1592556, 1933818, 2256121, 2388834, 2900727, 3867636, 4512242, 4777668, 5801454, 6768363, 9024484, 11602908, 13536726, 20305089, 27073452, 40610178, 81220356]

約数ペア:

[(1, 81220356), (2, 40610178), (3, 27073452), (4, 20305089), (6, 13536726), (7, 11602908), (9, 9024484), (12, 6768363), (14, 5801454), (17, 4777668), (18, 4512242), (21, 3867636), (28, 2900727), (34, 2388834), (36, 2256121), (42, 1933818), (51, 1592556), (63, 1289212), (68, 1194417), (84, 966909), (102, 796278), (119, 682524), (126, 644606), (153, 530852), (204, 398139), (238, 341262), (252, 322303), (306, 265426), (357, 227508), (476, 170631), (612, 132713), (714, 113754), (1071, 75836), (1428, 56877), (2142, 37918), (4284, 18959)]