81357325

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1$

素因数の和:127

約数の個数: 96

約数和(自身を含む): 134991360

約数和(自身を除く): 53634035

約数列:

[1, 5, 7, 17, 23, 25, 29, 35, 41, 85, 115, 119, 145, 161, 175, 203, 205, 287, 391, 425, 493, 575, 595, 667, 697, 725, 805, 943, 1015, 1025, 1189, 1435, 1955, 2465, 2737, 2975, 3335, 3451, 3485, 4025, 4669, 4715, 4879, 5075, 5945, 6601, 7175, 8323, 9775, 11339, 12325, 13685, 16031, 16675, 17255, 17425, 20213, 23345, 23575, 24395, 27347, 29725, 33005, 41615, 56695, 68425, 79373, 80155, 86275, 101065, 112217, 116725, 121975, 136735, 141491, 165025, 191429, 208075, 283475, 396865, 400775, 464899, 505325, 561085, 683675, 707455, 957145, 1984325, 2324495, 2805425, 3254293, 3537275, 4785725, 11622475, 16271465, 81357325]

約数ペア:

[(1, 81357325), (5, 16271465), (7, 11622475), (17, 4785725), (23, 3537275), (25, 3254293), (29, 2805425), (35, 2324495), (41, 1984325), (85, 957145), (115, 707455), (119, 683675), (145, 561085), (161, 505325), (175, 464899), (203, 400775), (205, 396865), (287, 283475), (391, 208075), (425, 191429), (493, 165025), (575, 141491), (595, 136735), (667, 121975), (697, 116725), (725, 112217), (805, 101065), (943, 86275), (1015, 80155), (1025, 79373), (1189, 68425), (1435, 56695), (1955, 41615), (2465, 33005), (2737, 29725), (2975, 27347), (3335, 24395), (3451, 23575), (3485, 23345), (4025, 20213), (4669, 17425), (4715, 17255), (4879, 16675), (5075, 16031), (5945, 13685), (6601, 12325), (7175, 11339), (8323, 9775)]