422500

素因数分解:

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

素因数の和:50

約数の個数: 45

約数和(自身を含む): 1000461

約数和(自身を除く): 577961

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 169, 250, 260, 325, 338, 500, 625, 650, 676, 845, 1250, 1300, 1625, 1690, 2500, 3250, 3380, 4225, 6500, 8125, 8450, 16250, 16900, 21125, 32500, 42250, 84500, 105625, 211250, 422500]

約数ペア:

[(1, 422500), (2, 211250), (4, 105625), (5, 84500), (10, 42250), (13, 32500), (20, 21125), (25, 16900), (26, 16250), (50, 8450), (52, 8125), (65, 6500), (100, 4225), (125, 3380), (130, 3250), (169, 2500), (250, 1690), (260, 1625), (325, 1300), (338, 1250), (500, 845), (625, 676)]