215125020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{108649}}^1$

素因数の和:108675

約数の個数: 72

約数和(自身を含む): 711874800

約数和(自身を除く): 496749780

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, 108649, 217298, 325947, 434596, 543245, 651894, 977841, 1086490, 1195139, 1303788, 1629735, 1955682, 2172980, 2390278, 3259470, 3585417, 3911364, 4780556, 4889205, 5975695, 6518940, 7170834, 9778410, 10756251, 11951390, 14341668, 17927085, 19556820, 21512502, 23902780, 35854170, 43025004, 53781255, 71708340, 107562510, 215125020]

約数ペア:

[(1, 215125020), (2, 107562510), (3, 71708340), (4, 53781255), (5, 43025004), (6, 35854170), (9, 23902780), (10, 21512502), (11, 19556820), (12, 17927085), (15, 14341668), (18, 11951390), (20, 10756251), (22, 9778410), (30, 7170834), (33, 6518940), (36, 5975695), (44, 4889205), (45, 4780556), (55, 3911364), (60, 3585417), (66, 3259470), (90, 2390278), (99, 2172980), (110, 1955682), (132, 1629735), (165, 1303788), (180, 1195139), (198, 1086490), (220, 977841), (330, 651894), (396, 543245), (495, 434596), (660, 325947), (990, 217298), (1980, 108649)]