320497840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{9941}}^1$

素因数の和:9998

約数の個数: 80

約数和(自身を含む): 828446976

約数和(自身を除く): 507949136

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 8060, 9941, 16120, 19882, 32240, 39764, 49705, 79528, 99410, 129233, 159056, 198820, 258466, 308171, 397640, 516932, 616342, 646165, 795280, 1033864, 1232684, 1292330, 1540855, 2067728, 2465368, 2584660, 3081710, 4006223, 4930736, 5169320, 6163420, 8012446, 10338640, 12326840, 16024892, 20031115, 24653680, 32049784, 40062230, 64099568, 80124460, 160248920, 320497840]

約数ペア:

[(1, 320497840), (2, 160248920), (4, 80124460), (5, 64099568), (8, 40062230), (10, 32049784), (13, 24653680), (16, 20031115), (20, 16024892), (26, 12326840), (31, 10338640), (40, 8012446), (52, 6163420), (62, 5169320), (65, 4930736), (80, 4006223), (104, 3081710), (124, 2584660), (130, 2465368), (155, 2067728), (208, 1540855), (248, 1292330), (260, 1232684), (310, 1033864), (403, 795280), (496, 646165), (520, 616342), (620, 516932), (806, 397640), (1040, 308171), (1240, 258466), (1612, 198820), (2015, 159056), (2480, 129233), (3224, 99410), (4030, 79528), (6448, 49705), (8060, 39764), (9941, 32240), (16120, 19882)]