21397860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:234

約数の個数: 144

約数和(自身を含む): 72176832

約数和(自身を除く): 50778972

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, 101, 107, 110, 132, 165, 180, 198, 202, 214, 220, 303, 321, 330, 396, 404, 428, 495, 505, 535, 606, 642, 660, 909, 963, 990, 1010, 1070, 1111, 1177, 1212, 1284, 1515, 1605, 1818, 1926, 1980, 2020, 2140, 2222, 2354, 3030, 3210, 3333, 3531, 3636, 3852, 4444, 4545, 4708, 4815, 5555, 5885, 6060, 6420, 6666, 7062, 9090, 9630, 9999, 10593, 10807, 11110, 11770, 13332, 14124, 16665, 17655, 18180, 19260, 19998, 21186, 21614, 22220, 23540, 32421, 33330, 35310, 39996, 42372, 43228, 49995, 52965, 54035, 64842, 66660, 70620, 97263, 99990, 105930, 108070, 118877, 129684, 162105, 194526, 199980, 211860, 216140, 237754, 324210, 356631, 389052, 475508, 486315, 594385, 648420, 713262, 972630, 1069893, 1188770, 1426524, 1783155, 1945260, 2139786, 2377540, 3566310, 4279572, 5349465, 7132620, 10698930, 21397860]

約数ペア:

[(1, 21397860), (2, 10698930), (3, 7132620), (4, 5349465), (5, 4279572), (6, 3566310), (9, 2377540), (10, 2139786), (11, 1945260), (12, 1783155), (15, 1426524), (18, 1188770), (20, 1069893), (22, 972630), (30, 713262), (33, 648420), (36, 594385), (44, 486315), (45, 475508), (55, 389052), (60, 356631), (66, 324210), (90, 237754), (99, 216140), (101, 211860), (107, 199980), (110, 194526), (132, 162105), (165, 129684), (180, 118877), (198, 108070), (202, 105930), (214, 99990), (220, 97263), (303, 70620), (321, 66660), (330, 64842), (396, 54035), (404, 52965), (428, 49995), (495, 43228), (505, 42372), (535, 39996), (606, 35310), (642, 33330), (660, 32421), (909, 23540), (963, 22220), (990, 21614), (1010, 21186), (1070, 19998), (1111, 19260), (1177, 18180), (1212, 17655), (1284, 16665), (1515, 14124), (1605, 13332), (1818, 11770), (1926, 11110), (1980, 10807), (2020, 10593), (2140, 9999), (2222, 9630), (2354, 9090), (3030, 7062), (3210, 6666), (3333, 6420), (3531, 6060), (3636, 5885), (3852, 5555), (4444, 4815), (4545, 4708)]