123453990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{211}}^1$

素因数の和:435

約数の個数: 128

約数和(自身を含む): 362672640

約数和(自身を除く): 239218650

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 27, 30, 33, 45, 54, 55, 66, 90, 99, 110, 135, 165, 197, 198, 211, 270, 297, 330, 394, 422, 495, 591, 594, 633, 985, 990, 1055, 1182, 1266, 1485, 1773, 1899, 1970, 2110, 2167, 2321, 2955, 2970, 3165, 3546, 3798, 4334, 4642, 5319, 5697, 5910, 6330, 6501, 6963, 8865, 9495, 10638, 10835, 11394, 11605, 13002, 13926, 17730, 18990, 19503, 20889, 21670, 23210, 26595, 28485, 32505, 34815, 39006, 41567, 41778, 53190, 56970, 58509, 62667, 65010, 69630, 83134, 97515, 104445, 117018, 124701, 125334, 195030, 207835, 208890, 249402, 292545, 313335, 374103, 415670, 457237, 585090, 623505, 626670, 748206, 914474, 1122309, 1247010, 1371711, 1870515, 2244618, 2286185, 2743422, 3741030, 4115133, 4572370, 5611545, 6858555, 8230266, 11223090, 12345399, 13717110, 20575665, 24690798, 41151330, 61726995, 123453990]

約数ペア:

[(1, 123453990), (2, 61726995), (3, 41151330), (5, 24690798), (6, 20575665), (9, 13717110), (10, 12345399), (11, 11223090), (15, 8230266), (18, 6858555), (22, 5611545), (27, 4572370), (30, 4115133), (33, 3741030), (45, 2743422), (54, 2286185), (55, 2244618), (66, 1870515), (90, 1371711), (99, 1247010), (110, 1122309), (135, 914474), (165, 748206), (197, 626670), (198, 623505), (211, 585090), (270, 457237), (297, 415670), (330, 374103), (394, 313335), (422, 292545), (495, 249402), (591, 208890), (594, 207835), (633, 195030), (985, 125334), (990, 124701), (1055, 117018), (1182, 104445), (1266, 97515), (1485, 83134), (1773, 69630), (1899, 65010), (1970, 62667), (2110, 58509), (2167, 56970), (2321, 53190), (2955, 41778), (2970, 41567), (3165, 39006), (3546, 34815), (3798, 32505), (4334, 28485), (4642, 26595), (5319, 23210), (5697, 21670), (5910, 20889), (6330, 19503), (6501, 18990), (6963, 17730), (8865, 13926), (9495, 13002), (10638, 11605), (10835, 11394)]