15919519

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 21150720

約数和(自身を除く): 5231201

約数列:

[1, 7, 11, 23, 77, 89, 101, 161, 253, 623, 707, 979, 1111, 1771, 2047, 2323, 6853, 7777, 8989, 14329, 16261, 22517, 25553, 62923, 98879, 157619, 178871, 206747, 692153, 1447229, 2274217, 15919519]

約数ペア:

[(1, 15919519), (7, 2274217), (11, 1447229), (23, 692153), (77, 206747), (89, 178871), (101, 157619), (161, 98879), (253, 62923), (623, 25553), (707, 22517), (979, 16261), (1111, 14329), (1771, 8989), (2047, 7777), (2323, 6853)]