8120450

素因数分解:

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

素因数の和:100

約数の個数: 54

約数和(自身を含む): 16899867

約数和(自身を除く): 8779417

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 169, 310, 325, 338, 403, 650, 775, 806, 845, 961, 1550, 1690, 1922, 2015, 4030, 4225, 4805, 5239, 8450, 9610, 10075, 10478, 12493, 20150, 24025, 24986, 26195, 48050, 52390, 62465, 124930, 130975, 162409, 261950, 312325, 324818, 624650, 812045, 1624090, 4060225, 8120450]

約数ペア:

[(1, 8120450), (2, 4060225), (5, 1624090), (10, 812045), (13, 624650), (25, 324818), (26, 312325), (31, 261950), (50, 162409), (62, 130975), (65, 124930), (130, 62465), (155, 52390), (169, 48050), (310, 26195), (325, 24986), (338, 24025), (403, 20150), (650, 12493), (775, 10478), (806, 10075), (845, 9610), (961, 8450), (1550, 5239), (1690, 4805), (1922, 4225), (2015, 4030)]