20025070

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4969}}^1$

素因数の和:5020

約数の個数: 32

約数和(自身を含む): 40078080

約数和(自身を除く): 20053010

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 4969, 9938, 24845, 49690, 64597, 129194, 154039, 308078, 322985, 645970, 770195, 1540390, 2002507, 4005014, 10012535, 20025070]

約数ペア:

[(1, 20025070), (2, 10012535), (5, 4005014), (10, 2002507), (13, 1540390), (26, 770195), (31, 645970), (62, 322985), (65, 308078), (130, 154039), (155, 129194), (310, 64597), (403, 49690), (806, 24845), (2015, 9938), (4030, 4969)]