20286500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{3121}}^1$

素因数の和:3153

約数の個数: 48

約数和(自身を含む): 47729136

約数和(自身を除く): 27442636

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3121, 3250, 6242, 6500, 12484, 15605, 31210, 40573, 62420, 78025, 81146, 156050, 162292, 202865, 312100, 390125, 405730, 780250, 811460, 1014325, 1560500, 2028650, 4057300, 5071625, 10143250, 20286500]

約数ペア:

[(1, 20286500), (2, 10143250), (4, 5071625), (5, 4057300), (10, 2028650), (13, 1560500), (20, 1014325), (25, 811460), (26, 780250), (50, 405730), (52, 390125), (65, 312100), (100, 202865), (125, 162292), (130, 156050), (250, 81146), (260, 78025), (325, 62420), (500, 40573), (650, 31210), (1300, 15605), (1625, 12484), (3121, 6500), (3250, 6242)]