21989880

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{617}}^1$

素因数の和:651

約数の個数: 160

約数和(自身を含む): 80760240

約数和(自身を除く): 58770360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 54, 55, 60, 66, 72, 81, 88, 90, 99, 108, 110, 120, 132, 135, 162, 165, 180, 198, 216, 220, 264, 270, 297, 324, 330, 360, 396, 405, 440, 495, 540, 594, 617, 648, 660, 792, 810, 891, 990, 1080, 1188, 1234, 1320, 1485, 1620, 1782, 1851, 1980, 2376, 2468, 2970, 3085, 3240, 3564, 3702, 3960, 4455, 4936, 5553, 5940, 6170, 6787, 7128, 7404, 8910, 9255, 11106, 11880, 12340, 13574, 14808, 16659, 17820, 18510, 20361, 22212, 24680, 27148, 27765, 33318, 33935, 35640, 37020, 40722, 44424, 49977, 54296, 55530, 61083, 66636, 67870, 74040, 81444, 83295, 99954, 101805, 111060, 122166, 133272, 135740, 162888, 166590, 183249, 199908, 203610, 222120, 244332, 249885, 271480, 305415, 333180, 366498, 399816, 407220, 488664, 499770, 549747, 610830, 666360, 732996, 814440, 916245, 999540, 1099494, 1221660, 1465992, 1832490, 1999080, 2198988, 2443320, 2748735, 3664980, 4397976, 5497470, 7329960, 10994940, 21989880]

約数ペア:

[(1, 21989880), (2, 10994940), (3, 7329960), (4, 5497470), (5, 4397976), (6, 3664980), (8, 2748735), (9, 2443320), (10, 2198988), (11, 1999080), (12, 1832490), (15, 1465992), (18, 1221660), (20, 1099494), (22, 999540), (24, 916245), (27, 814440), (30, 732996), (33, 666360), (36, 610830), (40, 549747), (44, 499770), (45, 488664), (54, 407220), (55, 399816), (60, 366498), (66, 333180), (72, 305415), (81, 271480), (88, 249885), (90, 244332), (99, 222120), (108, 203610), (110, 199908), (120, 183249), (132, 166590), (135, 162888), (162, 135740), (165, 133272), (180, 122166), (198, 111060), (216, 101805), (220, 99954), (264, 83295), (270, 81444), (297, 74040), (324, 67870), (330, 66636), (360, 61083), (396, 55530), (405, 54296), (440, 49977), (495, 44424), (540, 40722), (594, 37020), (617, 35640), (648, 33935), (660, 33318), (792, 27765), (810, 27148), (891, 24680), (990, 22212), (1080, 20361), (1188, 18510), (1234, 17820), (1320, 16659), (1485, 14808), (1620, 13574), (1782, 12340), (1851, 11880), (1980, 11106), (2376, 9255), (2468, 8910), (2970, 7404), (3085, 7128), (3240, 6787), (3564, 6170), (3702, 5940), (3960, 5553), (4455, 4936)]