20663720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6709}}^1$

素因数の和:6738

約数の個数: 64

約数和(自身を含む): 57974400

約数和(自身を除く): 37310680

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6709, 13418, 26836, 33545, 46963, 53672, 67090, 73799, 93926, 134180, 147598, 187852, 234815, 268360, 295196, 368995, 375704, 469630, 516593, 590392, 737990, 939260, 1033186, 1475980, 1878520, 2066372, 2582965, 2951960, 4132744, 5165930, 10331860, 20663720]

約数ペア:

[(1, 20663720), (2, 10331860), (4, 5165930), (5, 4132744), (7, 2951960), (8, 2582965), (10, 2066372), (11, 1878520), (14, 1475980), (20, 1033186), (22, 939260), (28, 737990), (35, 590392), (40, 516593), (44, 469630), (55, 375704), (56, 368995), (70, 295196), (77, 268360), (88, 234815), (110, 187852), (140, 147598), (154, 134180), (220, 93926), (280, 73799), (308, 67090), (385, 53672), (440, 46963), (616, 33545), (770, 26836), (1540, 13418), (3080, 6709)]