19898766

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{547}}^1$

素因数の和:645

約数の個数: 48

約数和(自身を含む): 45137664

約数和(自身を除く): 25238898

約数列:

[1, 2, 3, 6, 9, 18, 43, 47, 86, 94, 129, 141, 258, 282, 387, 423, 547, 774, 846, 1094, 1641, 2021, 3282, 4042, 4923, 6063, 9846, 12126, 18189, 23521, 25709, 36378, 47042, 51418, 70563, 77127, 141126, 154254, 211689, 231381, 423378, 462762, 1105487, 2210974, 3316461, 6632922, 9949383, 19898766]

約数ペア:

[(1, 19898766), (2, 9949383), (3, 6632922), (6, 3316461), (9, 2210974), (18, 1105487), (43, 462762), (47, 423378), (86, 231381), (94, 211689), (129, 154254), (141, 141126), (258, 77127), (282, 70563), (387, 51418), (423, 47042), (547, 36378), (774, 25709), (846, 23521), (1094, 18189), (1641, 12126), (2021, 9846), (3282, 6063), (4042, 4923)]