18129980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{3583}}^1$

素因数の和:3626

約数の個数: 48

約数和(自身を含む): 43352064

約数和(自身を除く): 25222084

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 220, 230, 253, 460, 506, 1012, 1265, 2530, 3583, 5060, 7166, 14332, 17915, 35830, 39413, 71660, 78826, 82409, 157652, 164818, 197065, 329636, 394130, 412045, 788260, 824090, 906499, 1648180, 1812998, 3625996, 4532495, 9064990, 18129980]

約数ペア:

[(1, 18129980), (2, 9064990), (4, 4532495), (5, 3625996), (10, 1812998), (11, 1648180), (20, 906499), (22, 824090), (23, 788260), (44, 412045), (46, 394130), (55, 329636), (92, 197065), (110, 164818), (115, 157652), (220, 82409), (230, 78826), (253, 71660), (460, 39413), (506, 35830), (1012, 17915), (1265, 14332), (2530, 7166), (3583, 5060)]