21251750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^2\times {\mathrm{503}}^1$

素因数の和:546

約数の個数: 48

約数和(自身を含む): 43164576

約数和(自身を除く): 21912826

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 169, 250, 325, 338, 503, 650, 845, 1006, 1625, 1690, 2515, 3250, 4225, 5030, 6539, 8450, 12575, 13078, 21125, 25150, 32695, 42250, 62875, 65390, 85007, 125750, 163475, 170014, 326950, 425035, 817375, 850070, 1634750, 2125175, 4250350, 10625875, 21251750]

約数ペア:

[(1, 21251750), (2, 10625875), (5, 4250350), (10, 2125175), (13, 1634750), (25, 850070), (26, 817375), (50, 425035), (65, 326950), (125, 170014), (130, 163475), (169, 125750), (250, 85007), (325, 65390), (338, 62875), (503, 42250), (650, 32695), (845, 25150), (1006, 21125), (1625, 13078), (1690, 12575), (2515, 8450), (3250, 6539), (4225, 5030)]