81961460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:297

約数の個数: 96

約数和(自身を含む): 204906240

約数和(自身を除く): 122944780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 109, 131, 140, 164, 205, 218, 262, 287, 410, 436, 524, 545, 574, 655, 763, 820, 917, 1090, 1148, 1310, 1435, 1526, 1834, 2180, 2620, 2870, 3052, 3668, 3815, 4469, 4585, 5371, 5740, 7630, 8938, 9170, 10742, 14279, 15260, 17876, 18340, 21484, 22345, 26855, 28558, 31283, 37597, 44690, 53710, 57116, 62566, 71395, 75194, 89380, 99953, 107420, 125132, 142790, 150388, 156415, 187985, 199906, 285580, 312830, 375970, 399812, 499765, 585439, 625660, 751940, 999530, 1170878, 1999060, 2341756, 2927195, 4098073, 5854390, 8196146, 11708780, 16392292, 20490365, 40980730, 81961460]

約数ペア:

[(1, 81961460), (2, 40980730), (4, 20490365), (5, 16392292), (7, 11708780), (10, 8196146), (14, 5854390), (20, 4098073), (28, 2927195), (35, 2341756), (41, 1999060), (70, 1170878), (82, 999530), (109, 751940), (131, 625660), (140, 585439), (164, 499765), (205, 399812), (218, 375970), (262, 312830), (287, 285580), (410, 199906), (436, 187985), (524, 156415), (545, 150388), (574, 142790), (655, 125132), (763, 107420), (820, 99953), (917, 89380), (1090, 75194), (1148, 71395), (1310, 62566), (1435, 57116), (1526, 53710), (1834, 44690), (2180, 37597), (2620, 31283), (2870, 28558), (3052, 26855), (3668, 22345), (3815, 21484), (4469, 18340), (4585, 17876), (5371, 15260), (5740, 14279), (7630, 10742), (8938, 9170)]