401367720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257287}}^1$

素因数の和:257314

約数の個数: 64

約数和(自身を含む): 1296731520

約数和(自身を除く): 895363800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 257287, 514574, 771861, 1029148, 1286435, 1543722, 2058296, 2572870, 3087444, 3344731, 3859305, 5145740, 6174888, 6689462, 7718610, 10034193, 10291480, 13378924, 15437220, 16723655, 20068386, 26757848, 30874440, 33447310, 40136772, 50170965, 66894620, 80273544, 100341930, 133789240, 200683860, 401367720]

約数ペア:

[(1, 401367720), (2, 200683860), (3, 133789240), (4, 100341930), (5, 80273544), (6, 66894620), (8, 50170965), (10, 40136772), (12, 33447310), (13, 30874440), (15, 26757848), (20, 20068386), (24, 16723655), (26, 15437220), (30, 13378924), (39, 10291480), (40, 10034193), (52, 7718610), (60, 6689462), (65, 6174888), (78, 5145740), (104, 3859305), (120, 3344731), (130, 3087444), (156, 2572870), (195, 2058296), (260, 1543722), (312, 1286435), (390, 1029148), (520, 771861), (780, 514574), (1560, 257287)]