21319830

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{787}}^1$

素因数の和:850

約数の個数: 96

約数和(自身を含む): 64905984

約数和(自身を除く): 43586154

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 43, 45, 63, 70, 86, 90, 105, 126, 129, 210, 215, 258, 301, 315, 387, 430, 602, 630, 645, 774, 787, 903, 1290, 1505, 1574, 1806, 1935, 2361, 2709, 3010, 3870, 3935, 4515, 4722, 5418, 5509, 7083, 7870, 9030, 11018, 11805, 13545, 14166, 16527, 23610, 27090, 27545, 33054, 33841, 35415, 49581, 55090, 67682, 70830, 82635, 99162, 101523, 165270, 169205, 203046, 236887, 247905, 304569, 338410, 473774, 495810, 507615, 609138, 710661, 1015230, 1184435, 1421322, 1522845, 2131983, 2368870, 3045690, 3553305, 4263966, 7106610, 10659915, 21319830]

約数ペア:

[(1, 21319830), (2, 10659915), (3, 7106610), (5, 4263966), (6, 3553305), (7, 3045690), (9, 2368870), (10, 2131983), (14, 1522845), (15, 1421322), (18, 1184435), (21, 1015230), (30, 710661), (35, 609138), (42, 507615), (43, 495810), (45, 473774), (63, 338410), (70, 304569), (86, 247905), (90, 236887), (105, 203046), (126, 169205), (129, 165270), (210, 101523), (215, 99162), (258, 82635), (301, 70830), (315, 67682), (387, 55090), (430, 49581), (602, 35415), (630, 33841), (645, 33054), (774, 27545), (787, 27090), (903, 23610), (1290, 16527), (1505, 14166), (1574, 13545), (1806, 11805), (1935, 11018), (2361, 9030), (2709, 7870), (3010, 7083), (3870, 5509), (3935, 5418), (4515, 4722)]