21381030

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{313}}^1$

素因数の和:363

約数の個数: 128

約数和(自身を含む): 65111040

約数和(自身を除く): 43730010

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 23, 27, 30, 33, 45, 46, 54, 55, 66, 69, 90, 99, 110, 115, 135, 138, 165, 198, 207, 230, 253, 270, 297, 313, 330, 345, 414, 495, 506, 594, 621, 626, 690, 759, 939, 990, 1035, 1242, 1265, 1485, 1518, 1565, 1878, 2070, 2277, 2530, 2817, 2970, 3105, 3130, 3443, 3795, 4554, 4695, 5634, 6210, 6831, 6886, 7199, 7590, 8451, 9390, 10329, 11385, 13662, 14085, 14398, 16902, 17215, 20658, 21597, 22770, 28170, 30987, 34155, 34430, 35995, 42255, 43194, 51645, 61974, 64791, 68310, 71990, 79189, 84510, 92961, 103290, 107985, 129582, 154935, 158378, 185922, 194373, 215970, 237567, 309870, 323955, 388746, 395945, 464805, 475134, 647910, 712701, 791890, 929610, 971865, 1187835, 1425402, 1943730, 2138103, 2375670, 3563505, 4276206, 7127010, 10690515, 21381030]

約数ペア:

[(1, 21381030), (2, 10690515), (3, 7127010), (5, 4276206), (6, 3563505), (9, 2375670), (10, 2138103), (11, 1943730), (15, 1425402), (18, 1187835), (22, 971865), (23, 929610), (27, 791890), (30, 712701), (33, 647910), (45, 475134), (46, 464805), (54, 395945), (55, 388746), (66, 323955), (69, 309870), (90, 237567), (99, 215970), (110, 194373), (115, 185922), (135, 158378), (138, 154935), (165, 129582), (198, 107985), (207, 103290), (230, 92961), (253, 84510), (270, 79189), (297, 71990), (313, 68310), (330, 64791), (345, 61974), (414, 51645), (495, 43194), (506, 42255), (594, 35995), (621, 34430), (626, 34155), (690, 30987), (759, 28170), (939, 22770), (990, 21597), (1035, 20658), (1242, 17215), (1265, 16902), (1485, 14398), (1518, 14085), (1565, 13662), (1878, 11385), (2070, 10329), (2277, 9390), (2530, 8451), (2817, 7590), (2970, 7199), (3105, 6886), (3130, 6831), (3443, 6210), (3795, 5634), (4554, 4695)]