21035875

素因数分解:

$5^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{829}}^1$

素因数の和:880

約数の個数: 32

約数和(自身を含む): 31075200

約数和(自身を除く): 10039325

約数列:

[1, 5, 7, 25, 29, 35, 125, 145, 175, 203, 725, 829, 875, 1015, 3625, 4145, 5075, 5803, 20725, 24041, 25375, 29015, 103625, 120205, 145075, 168287, 601025, 725375, 841435, 3005125, 4207175, 21035875]

約数ペア:

[(1, 21035875), (5, 4207175), (7, 3005125), (25, 841435), (29, 725375), (35, 601025), (125, 168287), (145, 145075), (175, 120205), (203, 103625), (725, 29015), (829, 25375), (875, 24041), (1015, 20725), (3625, 5803), (4145, 5075)]