155540240

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{31873}}^1$

素因数の和:31947

約数の個数: 40

約数和(自身を含む): 367570968

約数和(自身を除く): 212030728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 31873, 63746, 127492, 159365, 254984, 318730, 509968, 637460, 1274920, 1944253, 2549840, 3888506, 7777012, 9721265, 15554024, 19442530, 31108048, 38885060, 77770120, 155540240]

約数ペア:

[(1, 155540240), (2, 77770120), (4, 38885060), (5, 31108048), (8, 19442530), (10, 15554024), (16, 9721265), (20, 7777012), (40, 3888506), (61, 2549840), (80, 1944253), (122, 1274920), (244, 637460), (305, 509968), (488, 318730), (610, 254984), (976, 159365), (1220, 127492), (2440, 63746), (4880, 31873)]