71270120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{643}}^1$

素因数の和:834

約数の個数: 64

約数和(自身を含む): 171097920

約数和(自身を除く): 99827800

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 163, 170, 326, 340, 643, 652, 680, 815, 1286, 1304, 1630, 2572, 2771, 3215, 3260, 5144, 5542, 6430, 6520, 10931, 11084, 12860, 13855, 21862, 22168, 25720, 27710, 43724, 54655, 55420, 87448, 104809, 109310, 110840, 209618, 218620, 419236, 437240, 524045, 838472, 1048090, 1781753, 2096180, 3563506, 4192360, 7127012, 8908765, 14254024, 17817530, 35635060, 71270120]

約数ペア:

[(1, 71270120), (2, 35635060), (4, 17817530), (5, 14254024), (8, 8908765), (10, 7127012), (17, 4192360), (20, 3563506), (34, 2096180), (40, 1781753), (68, 1048090), (85, 838472), (136, 524045), (163, 437240), (170, 419236), (326, 218620), (340, 209618), (643, 110840), (652, 109310), (680, 104809), (815, 87448), (1286, 55420), (1304, 54655), (1630, 43724), (2572, 27710), (2771, 25720), (3215, 22168), (3260, 21862), (5144, 13855), (5542, 12860), (6430, 11084), (6520, 10931)]