20271860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7621}}^1$

素因数の和:7656

約数の個数: 48

約数和(自身を含む): 51219840

約数和(自身を除く): 30947980

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7621, 15242, 30484, 38105, 53347, 76210, 106694, 144799, 152420, 213388, 266735, 289598, 533470, 579196, 723995, 1013593, 1066940, 1447990, 2027186, 2895980, 4054372, 5067965, 10135930, 20271860]

約数ペア:

[(1, 20271860), (2, 10135930), (4, 5067965), (5, 4054372), (7, 2895980), (10, 2027186), (14, 1447990), (19, 1066940), (20, 1013593), (28, 723995), (35, 579196), (38, 533470), (70, 289598), (76, 266735), (95, 213388), (133, 152420), (140, 144799), (190, 106694), (266, 76210), (380, 53347), (532, 38105), (665, 30484), (1330, 15242), (2660, 7621)]