20125120

素因数分解:

$2^6\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1031}}^1$

素因数の和:1109

約数の個数: 56

約数和(自身を含む): 48755808

約数和(自身を除く): 28630688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 160, 244, 305, 320, 488, 610, 976, 1031, 1220, 1952, 2062, 2440, 3904, 4124, 4880, 5155, 8248, 9760, 10310, 16496, 19520, 20620, 32992, 41240, 62891, 65984, 82480, 125782, 164960, 251564, 314455, 329920, 503128, 628910, 1006256, 1257820, 2012512, 2515640, 4025024, 5031280, 10062560, 20125120]

約数ペア:

[(1, 20125120), (2, 10062560), (4, 5031280), (5, 4025024), (8, 2515640), (10, 2012512), (16, 1257820), (20, 1006256), (32, 628910), (40, 503128), (61, 329920), (64, 314455), (80, 251564), (122, 164960), (160, 125782), (244, 82480), (305, 65984), (320, 62891), (488, 41240), (610, 32992), (976, 20620), (1031, 19520), (1220, 16496), (1952, 10310), (2062, 9760), (2440, 8248), (3904, 5155), (4124, 4880)]