20386380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{48539}}^1$

素因数の和:48558

約数の個数: 48

約数和(自身を含む): 65237760

約数和(自身を除く): 44851380

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 48539, 97078, 145617, 194156, 242695, 291234, 339773, 485390, 582468, 679546, 728085, 970780, 1019319, 1359092, 1456170, 1698865, 2038638, 2912340, 3397730, 4077276, 5096595, 6795460, 10193190, 20386380]

約数ペア:

[(1, 20386380), (2, 10193190), (3, 6795460), (4, 5096595), (5, 4077276), (6, 3397730), (7, 2912340), (10, 2038638), (12, 1698865), (14, 1456170), (15, 1359092), (20, 1019319), (21, 970780), (28, 728085), (30, 679546), (35, 582468), (42, 485390), (60, 339773), (70, 291234), (84, 242695), (105, 194156), (140, 145617), (210, 97078), (420, 48539)]