20819830

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{691}}^1$

素因数の和:852

約数の個数: 32

約数和(自身を含む): 39460608

約数和(自身を除く): 18640778

約数列:

[1, 2, 5, 10, 23, 46, 115, 131, 230, 262, 655, 691, 1310, 1382, 3013, 3455, 6026, 6910, 15065, 15893, 30130, 31786, 79465, 90521, 158930, 181042, 452605, 905210, 2081983, 4163966, 10409915, 20819830]

約数ペア:

[(1, 20819830), (2, 10409915), (5, 4163966), (10, 2081983), (23, 905210), (46, 452605), (115, 181042), (131, 158930), (230, 90521), (262, 79465), (655, 31786), (691, 30130), (1310, 15893), (1382, 15065), (3013, 6910), (3455, 6026)]