21555800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:285

約数の個数: 96

約数和(自身を含む): 58255200

約数和(自身を除く): 36699400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 89, 100, 140, 173, 175, 178, 200, 280, 346, 350, 356, 445, 623, 692, 700, 712, 865, 890, 1211, 1246, 1384, 1400, 1730, 1780, 2225, 2422, 2492, 3115, 3460, 3560, 4325, 4450, 4844, 4984, 6055, 6230, 6920, 8650, 8900, 9688, 12110, 12460, 15397, 15575, 17300, 17800, 24220, 24920, 30275, 30794, 31150, 34600, 48440, 60550, 61588, 62300, 76985, 107779, 121100, 123176, 124600, 153970, 215558, 242200, 307940, 384925, 431116, 538895, 615880, 769850, 862232, 1077790, 1539700, 2155580, 2694475, 3079400, 4311160, 5388950, 10777900, 21555800]

約数ペア:

[(1, 21555800), (2, 10777900), (4, 5388950), (5, 4311160), (7, 3079400), (8, 2694475), (10, 2155580), (14, 1539700), (20, 1077790), (25, 862232), (28, 769850), (35, 615880), (40, 538895), (50, 431116), (56, 384925), (70, 307940), (89, 242200), (100, 215558), (140, 153970), (173, 124600), (175, 123176), (178, 121100), (200, 107779), (280, 76985), (346, 62300), (350, 61588), (356, 60550), (445, 48440), (623, 34600), (692, 31150), (700, 30794), (712, 30275), (865, 24920), (890, 24220), (1211, 17800), (1246, 17300), (1384, 15575), (1400, 15397), (1730, 12460), (1780, 12110), (2225, 9688), (2422, 8900), (2492, 8650), (3115, 6920), (3460, 6230), (3560, 6055), (4325, 4984), (4450, 4844)]