20590580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{271}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 45239040

約数和(自身を除く): 24648460

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 131, 145, 262, 271, 290, 524, 542, 580, 655, 1084, 1310, 1355, 2620, 2710, 3799, 5420, 7598, 7859, 15196, 15718, 18995, 31436, 35501, 37990, 39295, 71002, 75980, 78590, 142004, 157180, 177505, 355010, 710020, 1029529, 2059058, 4118116, 5147645, 10295290, 20590580]

約数ペア:

[(1, 20590580), (2, 10295290), (4, 5147645), (5, 4118116), (10, 2059058), (20, 1029529), (29, 710020), (58, 355010), (116, 177505), (131, 157180), (145, 142004), (262, 78590), (271, 75980), (290, 71002), (524, 39295), (542, 37990), (580, 35501), (655, 31436), (1084, 18995), (1310, 15718), (1355, 15196), (2620, 7859), (2710, 7598), (3799, 5420)]