21041800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{8093}}^1$

素因数の和:8122

約数の個数: 48

約数和(自身を含む): 52691940

約数和(自身を除く): 31650140

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 8093, 16186, 32372, 40465, 64744, 80930, 105209, 161860, 202325, 210418, 323720, 404650, 420836, 526045, 809300, 841672, 1052090, 1618600, 2104180, 2630225, 4208360, 5260450, 10520900, 21041800]

約数ペア:

[(1, 21041800), (2, 10520900), (4, 5260450), (5, 4208360), (8, 2630225), (10, 2104180), (13, 1618600), (20, 1052090), (25, 841672), (26, 809300), (40, 526045), (50, 420836), (52, 404650), (65, 323720), (100, 210418), (104, 202325), (130, 161860), (200, 105209), (260, 80930), (325, 64744), (520, 40465), (650, 32372), (1300, 16186), (2600, 8093)]