13243750

素因数分解:

$2^1\times 5^5\times {\mathrm{13}}^1\times {\mathrm{163}}^1$

素因数の和:203

約数の個数: 48

約数和(自身を含む): 26904528

約数和(自身を除く): 13660778

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 163, 250, 325, 326, 625, 650, 815, 1250, 1625, 1630, 2119, 3125, 3250, 4075, 4238, 6250, 8125, 8150, 10595, 16250, 20375, 21190, 40625, 40750, 52975, 81250, 101875, 105950, 203750, 264875, 509375, 529750, 1018750, 1324375, 2648750, 6621875, 13243750]

約数ペア:

[(1, 13243750), (2, 6621875), (5, 2648750), (10, 1324375), (13, 1018750), (25, 529750), (26, 509375), (50, 264875), (65, 203750), (125, 105950), (130, 101875), (163, 81250), (250, 52975), (325, 40750), (326, 40625), (625, 21190), (650, 20375), (815, 16250), (1250, 10595), (1625, 8150), (1630, 8125), (2119, 6250), (3125, 4238), (3250, 4075)]