71739340

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{983}}^1$

素因数の和:1122

約数の個数: 48

約数和(自身を含む): 156219840

約数和(自身を除く): 84480500

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 89, 164, 178, 205, 356, 410, 445, 820, 890, 983, 1780, 1966, 3649, 3932, 4915, 7298, 9830, 14596, 18245, 19660, 36490, 40303, 72980, 80606, 87487, 161212, 174974, 201515, 349948, 403030, 437435, 806060, 874870, 1749740, 3586967, 7173934, 14347868, 17934835, 35869670, 71739340]

約数ペア:

[(1, 71739340), (2, 35869670), (4, 17934835), (5, 14347868), (10, 7173934), (20, 3586967), (41, 1749740), (82, 874870), (89, 806060), (164, 437435), (178, 403030), (205, 349948), (356, 201515), (410, 174974), (445, 161212), (820, 87487), (890, 80606), (983, 72980), (1780, 40303), (1966, 36490), (3649, 19660), (3932, 18245), (4915, 14596), (7298, 9830)]