20905990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2957}}^1$

素因数の和:3072

約数の個数: 32

約数和(自身を含む): 43447104

約数和(自身を除く): 22541114

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 101, 202, 505, 707, 1010, 1414, 2957, 3535, 5914, 7070, 14785, 20699, 29570, 41398, 103495, 206990, 298657, 597314, 1493285, 2090599, 2986570, 4181198, 10452995, 20905990]

約数ペア:

[(1, 20905990), (2, 10452995), (5, 4181198), (7, 2986570), (10, 2090599), (14, 1493285), (35, 597314), (70, 298657), (101, 206990), (202, 103495), (505, 41398), (707, 29570), (1010, 20699), (1414, 14785), (2957, 7070), (3535, 5914)]