20339475

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{907}}^1$

素因数の和:956

約数の個数: 48

約数和(自身を含む): 37830912

約数和(自身を除く): 17491437

約数列:

[1, 3, 5, 13, 15, 23, 25, 39, 65, 69, 75, 115, 195, 299, 325, 345, 575, 897, 907, 975, 1495, 1725, 2721, 4485, 4535, 7475, 11791, 13605, 20861, 22425, 22675, 35373, 58955, 62583, 68025, 104305, 176865, 271193, 294775, 312915, 521525, 813579, 884325, 1355965, 1564575, 4067895, 6779825, 20339475]

約数ペア:

[(1, 20339475), (3, 6779825), (5, 4067895), (13, 1564575), (15, 1355965), (23, 884325), (25, 813579), (39, 521525), (65, 312915), (69, 294775), (75, 271193), (115, 176865), (195, 104305), (299, 68025), (325, 62583), (345, 58955), (575, 35373), (897, 22675), (907, 22425), (975, 20861), (1495, 13605), (1725, 11791), (2721, 7475), (4485, 4535)]