20573175

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{263}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 39283200

約数和(自身を除く): 18710025

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 149, 175, 263, 447, 525, 745, 789, 1043, 1315, 1841, 2235, 3129, 3725, 3945, 5215, 5523, 6575, 9205, 11175, 15645, 19725, 26075, 27615, 39187, 46025, 78225, 117561, 138075, 195935, 274309, 587805, 822927, 979675, 1371545, 2939025, 4114635, 6857725, 20573175]

約数ペア:

[(1, 20573175), (3, 6857725), (5, 4114635), (7, 2939025), (15, 1371545), (21, 979675), (25, 822927), (35, 587805), (75, 274309), (105, 195935), (149, 138075), (175, 117561), (263, 78225), (447, 46025), (525, 39187), (745, 27615), (789, 26075), (1043, 19725), (1315, 15645), (1841, 11175), (2235, 9205), (3129, 6575), (3725, 5523), (3945, 5215)]