21192860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2203}}^1$

素因数の和:2262

約数の個数: 48

約数和(自身を含む): 49246176

約数和(自身を除く): 28053316

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2203, 2405, 4406, 4810, 8812, 9620, 11015, 22030, 28639, 44060, 57278, 81511, 114556, 143195, 163022, 286390, 326044, 407555, 572780, 815110, 1059643, 1630220, 2119286, 4238572, 5298215, 10596430, 21192860]

約数ペア:

[(1, 21192860), (2, 10596430), (4, 5298215), (5, 4238572), (10, 2119286), (13, 1630220), (20, 1059643), (26, 815110), (37, 572780), (52, 407555), (65, 326044), (74, 286390), (130, 163022), (148, 143195), (185, 114556), (260, 81511), (370, 57278), (481, 44060), (740, 28639), (962, 22030), (1924, 11015), (2203, 9620), (2405, 8812), (4406, 4810)]