20210775

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1091}}^1$

素因数の和:1136

約数の個数: 48

約数和(自身を含む): 37914240

約数和(自身を除く): 17703465

約数列:

[1, 3, 5, 13, 15, 19, 25, 39, 57, 65, 75, 95, 195, 247, 285, 325, 475, 741, 975, 1091, 1235, 1425, 3273, 3705, 5455, 6175, 14183, 16365, 18525, 20729, 27275, 42549, 62187, 70915, 81825, 103645, 212745, 269477, 310935, 354575, 518225, 808431, 1063725, 1347385, 1554675, 4042155, 6736925, 20210775]

約数ペア:

[(1, 20210775), (3, 6736925), (5, 4042155), (13, 1554675), (15, 1347385), (19, 1063725), (25, 808431), (39, 518225), (57, 354575), (65, 310935), (75, 269477), (95, 212745), (195, 103645), (247, 81825), (285, 70915), (325, 62187), (475, 42549), (741, 27275), (975, 20729), (1091, 18525), (1235, 16365), (1425, 14183), (3273, 6175), (3705, 5455)]