81115972

素因数分解:

$2^2\times 7^2\times {\mathrm{163}}^1\times {\mathrm{2539}}^1$

素因数の和:2720

約数の個数: 36

約数和(自身を含む): 166207440

約数和(自身を除く): 85091468

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 163, 196, 326, 652, 1141, 2282, 2539, 4564, 5078, 7987, 10156, 15974, 17773, 31948, 35546, 71092, 124411, 248822, 413857, 497644, 827714, 1655428, 2896999, 5793998, 11587996, 20278993, 40557986, 81115972]

約数ペア:

[(1, 81115972), (2, 40557986), (4, 20278993), (7, 11587996), (14, 5793998), (28, 2896999), (49, 1655428), (98, 827714), (163, 497644), (196, 413857), (326, 248822), (652, 124411), (1141, 71092), (2282, 35546), (2539, 31948), (4564, 17773), (5078, 15974), (7987, 10156)]