20054775

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{307}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 36358784

約数和(自身を除く): 16304009

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 67, 75, 195, 201, 307, 325, 335, 871, 921, 975, 1005, 1535, 1675, 2613, 3991, 4355, 4605, 5025, 7675, 11973, 13065, 19955, 20569, 21775, 23025, 59865, 61707, 65325, 99775, 102845, 267397, 299325, 308535, 514225, 802191, 1336985, 1542675, 4010955, 6684925, 20054775]

約数ペア:

[(1, 20054775), (3, 6684925), (5, 4010955), (13, 1542675), (15, 1336985), (25, 802191), (39, 514225), (65, 308535), (67, 299325), (75, 267397), (195, 102845), (201, 99775), (307, 65325), (325, 61707), (335, 59865), (871, 23025), (921, 21775), (975, 20569), (1005, 19955), (1535, 13065), (1675, 11973), (2613, 7675), (3991, 5025), (4355, 4605)]