21585928

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:374

約数の個数: 64

約数和(自身を含む): 50400000

約数和(自身を除く): 28814072

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 149, 182, 199, 298, 364, 398, 596, 728, 796, 1043, 1192, 1393, 1592, 1937, 2086, 2587, 2786, 3874, 4172, 5174, 5572, 7748, 8344, 10348, 11144, 13559, 15496, 18109, 20696, 27118, 29651, 36218, 54236, 59302, 72436, 108472, 118604, 144872, 207557, 237208, 385463, 415114, 770926, 830228, 1541852, 1660456, 2698241, 3083704, 5396482, 10792964, 21585928]

約数ペア:

[(1, 21585928), (2, 10792964), (4, 5396482), (7, 3083704), (8, 2698241), (13, 1660456), (14, 1541852), (26, 830228), (28, 770926), (52, 415114), (56, 385463), (91, 237208), (104, 207557), (149, 144872), (182, 118604), (199, 108472), (298, 72436), (364, 59302), (398, 54236), (596, 36218), (728, 29651), (796, 27118), (1043, 20696), (1192, 18109), (1393, 15496), (1592, 13559), (1937, 11144), (2086, 10348), (2587, 8344), (2786, 7748), (3874, 5572), (4172, 5174)]