20985450

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{4513}}^1$

素因数の和:4559

約数の個数: 48

約数和(自身を含む): 53734656

約数和(自身を除く): 32749206

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 31, 50, 62, 75, 93, 150, 155, 186, 310, 465, 775, 930, 1550, 2325, 4513, 4650, 9026, 13539, 22565, 27078, 45130, 67695, 112825, 135390, 139903, 225650, 279806, 338475, 419709, 676950, 699515, 839418, 1399030, 2098545, 3497575, 4197090, 6995150, 10492725, 20985450]

約数ペア:

[(1, 20985450), (2, 10492725), (3, 6995150), (5, 4197090), (6, 3497575), (10, 2098545), (15, 1399030), (25, 839418), (30, 699515), (31, 676950), (50, 419709), (62, 338475), (75, 279806), (93, 225650), (150, 139903), (155, 135390), (186, 112825), (310, 67695), (465, 45130), (775, 27078), (930, 22565), (1550, 13539), (2325, 9026), (4513, 4650)]