19922500

素因数分解:

$2^2\times 5^4\times {\mathrm{13}}^1\times {\mathrm{613}}^1$

素因数の和:650

約数の個数: 60

約数和(自身を含む): 46994332

約数和(自身を除く): 27071832

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 613, 625, 650, 1226, 1250, 1300, 1625, 2452, 2500, 3065, 3250, 6130, 6500, 7969, 8125, 12260, 15325, 15938, 16250, 30650, 31876, 32500, 39845, 61300, 76625, 79690, 153250, 159380, 199225, 306500, 383125, 398450, 766250, 796900, 996125, 1532500, 1992250, 3984500, 4980625, 9961250, 19922500]

約数ペア:

[(1, 19922500), (2, 9961250), (4, 4980625), (5, 3984500), (10, 1992250), (13, 1532500), (20, 996125), (25, 796900), (26, 766250), (50, 398450), (52, 383125), (65, 306500), (100, 199225), (125, 159380), (130, 153250), (250, 79690), (260, 76625), (325, 61300), (500, 39845), (613, 32500), (625, 31876), (650, 30650), (1226, 16250), (1250, 15938), (1300, 15325), (1625, 12260), (2452, 8125), (2500, 7969), (3065, 6500), (3250, 6130)]