21853020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7433}}^1$

素因数の和:7459

約数の個数: 72

約数和(自身を含む): 71187984

約数和(自身を除く): 49334964

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 7433, 14866, 22299, 29732, 37165, 44598, 52031, 74330, 89196, 104062, 111495, 148660, 156093, 208124, 222990, 260155, 312186, 364217, 445980, 520310, 624372, 728434, 780465, 1040620, 1092651, 1456868, 1560930, 1821085, 2185302, 3121860, 3642170, 4370604, 5463255, 7284340, 10926510, 21853020]

約数ペア:

[(1, 21853020), (2, 10926510), (3, 7284340), (4, 5463255), (5, 4370604), (6, 3642170), (7, 3121860), (10, 2185302), (12, 1821085), (14, 1560930), (15, 1456868), (20, 1092651), (21, 1040620), (28, 780465), (30, 728434), (35, 624372), (42, 520310), (49, 445980), (60, 364217), (70, 312186), (84, 260155), (98, 222990), (105, 208124), (140, 156093), (147, 148660), (196, 111495), (210, 104062), (245, 89196), (294, 74330), (420, 52031), (490, 44598), (588, 37165), (735, 29732), (980, 22299), (1470, 14866), (2940, 7433)]