21650915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{283}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 30917376

約数和(自身を除く): 9266461

約数列:

[1, 5, 11, 13, 55, 65, 107, 143, 283, 535, 715, 1177, 1391, 1415, 3113, 3679, 5885, 6955, 15301, 15565, 18395, 30281, 40469, 76505, 151405, 202345, 333091, 393653, 1665455, 1968265, 4330183, 21650915]

約数ペア:

[(1, 21650915), (5, 4330183), (11, 1968265), (13, 1665455), (55, 393653), (65, 333091), (107, 202345), (143, 151405), (283, 76505), (535, 40469), (715, 30281), (1177, 18395), (1391, 15565), (1415, 15301), (3113, 6955), (3679, 5885)]