21043230

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{683}}^1$

素因数の和:785

約数の個数: 64

約数和(自身を含む): 55157760

約数和(自身を除く): 34114530

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 79, 130, 158, 195, 237, 390, 395, 474, 683, 790, 1027, 1185, 1366, 2049, 2054, 2370, 3081, 3415, 4098, 5135, 6162, 6830, 8879, 10245, 10270, 15405, 17758, 20490, 26637, 30810, 44395, 53274, 53957, 88790, 107914, 133185, 161871, 266370, 269785, 323742, 539570, 701441, 809355, 1402882, 1618710, 2104323, 3507205, 4208646, 7014410, 10521615, 21043230]

約数ペア:

[(1, 21043230), (2, 10521615), (3, 7014410), (5, 4208646), (6, 3507205), (10, 2104323), (13, 1618710), (15, 1402882), (26, 809355), (30, 701441), (39, 539570), (65, 323742), (78, 269785), (79, 266370), (130, 161871), (158, 133185), (195, 107914), (237, 88790), (390, 53957), (395, 53274), (474, 44395), (683, 30810), (790, 26637), (1027, 20490), (1185, 17758), (1366, 15405), (2049, 10270), (2054, 10245), (2370, 8879), (3081, 6830), (3415, 6162), (4098, 5135)]