21400480

素因数分解:

$2^5\times 5^1\times {\mathrm{59}}^1\times {\mathrm{2267}}^1$

素因数の和:2341

約数の個数: 48

約数和(自身を含む): 51438240

約数和(自身を除く): 30037760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 80, 118, 160, 236, 295, 472, 590, 944, 1180, 1888, 2267, 2360, 4534, 4720, 9068, 9440, 11335, 18136, 22670, 36272, 45340, 72544, 90680, 133753, 181360, 267506, 362720, 535012, 668765, 1070024, 1337530, 2140048, 2675060, 4280096, 5350120, 10700240, 21400480]

約数ペア:

[(1, 21400480), (2, 10700240), (4, 5350120), (5, 4280096), (8, 2675060), (10, 2140048), (16, 1337530), (20, 1070024), (32, 668765), (40, 535012), (59, 362720), (80, 267506), (118, 181360), (160, 133753), (236, 90680), (295, 72544), (472, 45340), (590, 36272), (944, 22670), (1180, 18136), (1888, 11335), (2267, 9440), (2360, 9068), (4534, 4720)]