21418194

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{263}}^1\times {\mathrm{277}}^1$

素因数の和:559

約数の個数: 48

約数和(自身を含む): 50200128

約数和(自身を除く): 28781934

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 263, 277, 294, 526, 554, 789, 831, 1578, 1662, 1841, 1939, 3682, 3878, 5523, 5817, 11046, 11634, 12887, 13573, 25774, 27146, 38661, 40719, 72851, 77322, 81438, 145702, 218553, 437106, 509957, 1019914, 1529871, 3059742, 3569699, 7139398, 10709097, 21418194]

約数ペア:

[(1, 21418194), (2, 10709097), (3, 7139398), (6, 3569699), (7, 3059742), (14, 1529871), (21, 1019914), (42, 509957), (49, 437106), (98, 218553), (147, 145702), (263, 81438), (277, 77322), (294, 72851), (526, 40719), (554, 38661), (789, 27146), (831, 25774), (1578, 13573), (1662, 12887), (1841, 11634), (1939, 11046), (3682, 5817), (3878, 5523)]