20644120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4337}}^1$

素因数の和:4372

約数の個数: 64

約数和(自身を含む): 56220480

約数和(自身を除く): 35576360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 280, 340, 476, 595, 680, 952, 1190, 2380, 4337, 4760, 8674, 17348, 21685, 30359, 34696, 43370, 60718, 73729, 86740, 121436, 147458, 151795, 173480, 242872, 294916, 303590, 368645, 516103, 589832, 607180, 737290, 1032206, 1214360, 1474580, 2064412, 2580515, 2949160, 4128824, 5161030, 10322060, 20644120]

約数ペア:

[(1, 20644120), (2, 10322060), (4, 5161030), (5, 4128824), (7, 2949160), (8, 2580515), (10, 2064412), (14, 1474580), (17, 1214360), (20, 1032206), (28, 737290), (34, 607180), (35, 589832), (40, 516103), (56, 368645), (68, 303590), (70, 294916), (85, 242872), (119, 173480), (136, 151795), (140, 147458), (170, 121436), (238, 86740), (280, 73729), (340, 60718), (476, 43370), (595, 34696), (680, 30359), (952, 21685), (1190, 17348), (2380, 8674), (4337, 4760)]