20810480

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4409}}^1$

素因数の和:4481

約数の個数: 40

約数和(自身を含む): 49215600

約数和(自身を除く): 28405120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4409, 4720, 8818, 17636, 22045, 35272, 44090, 70544, 88180, 176360, 260131, 352720, 520262, 1040524, 1300655, 2081048, 2601310, 4162096, 5202620, 10405240, 20810480]

約数ペア:

[(1, 20810480), (2, 10405240), (4, 5202620), (5, 4162096), (8, 2601310), (10, 2081048), (16, 1300655), (20, 1040524), (40, 520262), (59, 352720), (80, 260131), (118, 176360), (236, 88180), (295, 70544), (472, 44090), (590, 35272), (944, 22045), (1180, 17636), (2360, 8818), (4409, 4720)]