278360277

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{307}}^1\times {\mathrm{347}}^1$

素因数の和:737

約数の個数: 32

約数和(自身を含む): 408156672

約数和(自身を除く): 129796395

約数列:

[1, 3, 13, 39, 67, 201, 307, 347, 871, 921, 1041, 2613, 3991, 4511, 11973, 13533, 20569, 23249, 61707, 69747, 106529, 267397, 302237, 319587, 802191, 906711, 1384877, 4154631, 7137443, 21412329, 92786759, 278360277]

約数ペア:

[(1, 278360277), (3, 92786759), (13, 21412329), (39, 7137443), (67, 4154631), (201, 1384877), (307, 906711), (347, 802191), (871, 319587), (921, 302237), (1041, 267397), (2613, 106529), (3991, 69747), (4511, 61707), (11973, 23249), (13533, 20569)]