21001860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10607}}^1$

素因数の和:10633

約数の個数: 72

約数和(自身を含む): 69503616

約数和(自身を除く): 48501756

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10607, 21214, 31821, 42428, 53035, 63642, 95463, 106070, 116677, 127284, 159105, 190926, 212140, 233354, 318210, 350031, 381852, 466708, 477315, 583385, 636420, 700062, 954630, 1050093, 1166770, 1400124, 1750155, 1909260, 2100186, 2333540, 3500310, 4200372, 5250465, 7000620, 10500930, 21001860]

約数ペア:

[(1, 21001860), (2, 10500930), (3, 7000620), (4, 5250465), (5, 4200372), (6, 3500310), (9, 2333540), (10, 2100186), (11, 1909260), (12, 1750155), (15, 1400124), (18, 1166770), (20, 1050093), (22, 954630), (30, 700062), (33, 636420), (36, 583385), (44, 477315), (45, 466708), (55, 381852), (60, 350031), (66, 318210), (90, 233354), (99, 212140), (110, 190926), (132, 159105), (165, 127284), (180, 116677), (198, 106070), (220, 95463), (330, 63642), (396, 53035), (495, 42428), (660, 31821), (990, 21214), (1980, 10607)]