19571890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{313}}^1$

素因数の和:383

約数の個数: 48

約数和(自身を含む): 39304008

約数和(自身を除く): 19732118

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 169, 185, 313, 338, 370, 481, 626, 845, 962, 1565, 1690, 2405, 3130, 4069, 4810, 6253, 8138, 11581, 12506, 20345, 23162, 31265, 40690, 52897, 57905, 62530, 105794, 115810, 150553, 264485, 301106, 528970, 752765, 1505530, 1957189, 3914378, 9785945, 19571890]

約数ペア:

[(1, 19571890), (2, 9785945), (5, 3914378), (10, 1957189), (13, 1505530), (26, 752765), (37, 528970), (65, 301106), (74, 264485), (130, 150553), (169, 115810), (185, 105794), (313, 62530), (338, 57905), (370, 52897), (481, 40690), (626, 31265), (845, 23162), (962, 20345), (1565, 12506), (1690, 11581), (2405, 8138), (3130, 6253), (4069, 4810)]