19505900

素因数分解:

$2^2\times 5^2\times {\mathrm{131}}^1\times {\mathrm{1489}}^1$

素因数の和:1634

約数の個数: 36

約数和(自身を含む): 42679560

約数和(自身を除く): 23173660

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 131, 262, 524, 655, 1310, 1489, 2620, 2978, 3275, 5956, 6550, 7445, 13100, 14890, 29780, 37225, 74450, 148900, 195059, 390118, 780236, 975295, 1950590, 3901180, 4876475, 9752950, 19505900]

約数ペア:

[(1, 19505900), (2, 9752950), (4, 4876475), (5, 3901180), (10, 1950590), (20, 975295), (25, 780236), (50, 390118), (100, 195059), (131, 148900), (262, 74450), (524, 37225), (655, 29780), (1310, 14890), (1489, 13100), (2620, 7445), (2978, 6550), (3275, 5956)]