81303240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{383}}^1$

素因数の和:487

約数の個数: 128

約数和(自身を含む): 257126400

約数和(自身を除く): 175823160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 58, 60, 61, 87, 116, 120, 122, 145, 174, 183, 232, 244, 290, 305, 348, 366, 383, 435, 488, 580, 610, 696, 732, 766, 870, 915, 1149, 1160, 1220, 1464, 1532, 1740, 1769, 1830, 1915, 2298, 2440, 3064, 3480, 3538, 3660, 3830, 4596, 5307, 5745, 7076, 7320, 7660, 8845, 9192, 10614, 11107, 11490, 14152, 15320, 17690, 21228, 22214, 22980, 23363, 26535, 33321, 35380, 42456, 44428, 45960, 46726, 53070, 55535, 66642, 70089, 70760, 88856, 93452, 106140, 111070, 116815, 133284, 140178, 166605, 186904, 212280, 222140, 233630, 266568, 280356, 333210, 350445, 444280, 467260, 560712, 666420, 677527, 700890, 934520, 1332840, 1355054, 1401780, 2032581, 2710108, 2803560, 3387635, 4065162, 5420216, 6775270, 8130324, 10162905, 13550540, 16260648, 20325810, 27101080, 40651620, 81303240]

約数ペア:

[(1, 81303240), (2, 40651620), (3, 27101080), (4, 20325810), (5, 16260648), (6, 13550540), (8, 10162905), (10, 8130324), (12, 6775270), (15, 5420216), (20, 4065162), (24, 3387635), (29, 2803560), (30, 2710108), (40, 2032581), (58, 1401780), (60, 1355054), (61, 1332840), (87, 934520), (116, 700890), (120, 677527), (122, 666420), (145, 560712), (174, 467260), (183, 444280), (232, 350445), (244, 333210), (290, 280356), (305, 266568), (348, 233630), (366, 222140), (383, 212280), (435, 186904), (488, 166605), (580, 140178), (610, 133284), (696, 116815), (732, 111070), (766, 106140), (870, 93452), (915, 88856), (1149, 70760), (1160, 70089), (1220, 66642), (1464, 55535), (1532, 53070), (1740, 46726), (1769, 45960), (1830, 44428), (1915, 42456), (2298, 35380), (2440, 33321), (3064, 26535), (3480, 23363), (3538, 22980), (3660, 22214), (3830, 21228), (4596, 17690), (5307, 15320), (5745, 14152), (7076, 11490), (7320, 11107), (7660, 10614), (8845, 9192)]