245440

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1$

素因数の和:89

約数の個数: 56

約数和(自身を含む): 640080

約数和(自身を除く): 394640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 59, 64, 65, 80, 104, 118, 130, 160, 208, 236, 260, 295, 320, 416, 472, 520, 590, 767, 832, 944, 1040, 1180, 1534, 1888, 2080, 2360, 3068, 3776, 3835, 4160, 4720, 6136, 7670, 9440, 12272, 15340, 18880, 24544, 30680, 49088, 61360, 122720, 245440]

約数ペア:

[(1, 245440), (2, 122720), (4, 61360), (5, 49088), (8, 30680), (10, 24544), (13, 18880), (16, 15340), (20, 12272), (26, 9440), (32, 7670), (40, 6136), (52, 4720), (59, 4160), (64, 3835), (65, 3776), (80, 3068), (104, 2360), (118, 2080), (130, 1888), (160, 1534), (208, 1180), (236, 1040), (260, 944), (295, 832), (320, 767), (416, 590), (472, 520)]