19805300

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 45830400

約数和(自身を除く): 26025100

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 79, 92, 100, 109, 115, 158, 218, 230, 316, 395, 436, 460, 545, 575, 790, 1090, 1150, 1580, 1817, 1975, 2180, 2300, 2507, 2725, 3634, 3950, 5014, 5450, 7268, 7900, 8611, 9085, 10028, 10900, 12535, 17222, 18170, 25070, 34444, 36340, 43055, 45425, 50140, 62675, 86110, 90850, 125350, 172220, 181700, 198053, 215275, 250700, 396106, 430550, 792212, 861100, 990265, 1980530, 3961060, 4951325, 9902650, 19805300]

約数ペア:

[(1, 19805300), (2, 9902650), (4, 4951325), (5, 3961060), (10, 1980530), (20, 990265), (23, 861100), (25, 792212), (46, 430550), (50, 396106), (79, 250700), (92, 215275), (100, 198053), (109, 181700), (115, 172220), (158, 125350), (218, 90850), (230, 86110), (316, 62675), (395, 50140), (436, 45425), (460, 43055), (545, 36340), (575, 34444), (790, 25070), (1090, 18170), (1150, 17222), (1580, 12535), (1817, 10900), (1975, 10028), (2180, 9085), (2300, 8611), (2507, 7900), (2725, 7268), (3634, 5450), (3950, 5014)]