20754920

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{2153}}^1$

素因数の和:2405

約数の個数: 32

約数和(自身を含む): 46914120

約数和(自身を除く): 26159200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1928, 2153, 2410, 4306, 4820, 8612, 9640, 10765, 17224, 21530, 43060, 86120, 518873, 1037746, 2075492, 2594365, 4150984, 5188730, 10377460, 20754920]

約数ペア:

[(1, 20754920), (2, 10377460), (4, 5188730), (5, 4150984), (8, 2594365), (10, 2075492), (20, 1037746), (40, 518873), (241, 86120), (482, 43060), (964, 21530), (1205, 17224), (1928, 10765), (2153, 9640), (2410, 8612), (4306, 4820)]