21515550

素因数分解:

$2^1\times 3^1\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:714

約数の個数: 96

約数和(自身を含む): 63043584

約数和(自身を除く): 41528034

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 31, 35, 42, 50, 62, 70, 75, 93, 105, 150, 155, 175, 186, 210, 217, 310, 350, 434, 465, 525, 651, 661, 775, 930, 1050, 1085, 1302, 1322, 1550, 1983, 2170, 2325, 3255, 3305, 3966, 4627, 4650, 5425, 6510, 6610, 9254, 9915, 10850, 13881, 16275, 16525, 19830, 20491, 23135, 27762, 32550, 33050, 40982, 46270, 49575, 61473, 69405, 99150, 102455, 115675, 122946, 138810, 143437, 204910, 231350, 286874, 307365, 347025, 430311, 512275, 614730, 694050, 717185, 860622, 1024550, 1434370, 1536825, 2151555, 3073650, 3585925, 4303110, 7171850, 10757775, 21515550]

約数ペア:

[(1, 21515550), (2, 10757775), (3, 7171850), (5, 4303110), (6, 3585925), (7, 3073650), (10, 2151555), (14, 1536825), (15, 1434370), (21, 1024550), (25, 860622), (30, 717185), (31, 694050), (35, 614730), (42, 512275), (50, 430311), (62, 347025), (70, 307365), (75, 286874), (93, 231350), (105, 204910), (150, 143437), (155, 138810), (175, 122946), (186, 115675), (210, 102455), (217, 99150), (310, 69405), (350, 61473), (434, 49575), (465, 46270), (525, 40982), (651, 33050), (661, 32550), (775, 27762), (930, 23135), (1050, 20491), (1085, 19830), (1302, 16525), (1322, 16275), (1550, 13881), (1983, 10850), (2170, 9915), (2325, 9254), (3255, 6610), (3305, 6510), (3966, 5425), (4627, 4650)]