723140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1$

素因数の和:212

約数の個数: 48

約数和(自身を含む): 1753920

約数和(自身を除く): 1030780

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 173, 190, 209, 220, 346, 380, 418, 692, 836, 865, 1045, 1730, 1903, 2090, 3287, 3460, 3806, 4180, 6574, 7612, 9515, 13148, 16435, 19030, 32870, 36157, 38060, 65740, 72314, 144628, 180785, 361570, 723140]

約数ペア:

[(1, 723140), (2, 361570), (4, 180785), (5, 144628), (10, 72314), (11, 65740), (19, 38060), (20, 36157), (22, 32870), (38, 19030), (44, 16435), (55, 13148), (76, 9515), (95, 7612), (110, 6574), (173, 4180), (190, 3806), (209, 3460), (220, 3287), (346, 2090), (380, 1903), (418, 1730), (692, 1045), (836, 865)]