20397222

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:162

約数の個数: 72

約数和(自身を含む): 48380904

約数和(自身を除く): 27983682

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 43, 57, 73, 86, 114, 129, 146, 171, 219, 258, 342, 361, 387, 438, 657, 722, 774, 817, 1083, 1314, 1387, 1634, 2166, 2451, 2774, 3139, 3249, 4161, 4902, 6278, 6498, 7353, 8322, 9417, 12483, 14706, 15523, 18834, 24966, 26353, 28251, 31046, 46569, 52706, 56502, 59641, 79059, 93138, 119282, 139707, 158118, 178923, 237177, 279414, 357846, 474354, 536769, 1073538, 1133179, 2266358, 3399537, 6799074, 10198611, 20397222]

約数ペア:

[(1, 20397222), (2, 10198611), (3, 6799074), (6, 3399537), (9, 2266358), (18, 1133179), (19, 1073538), (38, 536769), (43, 474354), (57, 357846), (73, 279414), (86, 237177), (114, 178923), (129, 158118), (146, 139707), (171, 119282), (219, 93138), (258, 79059), (342, 59641), (361, 56502), (387, 52706), (438, 46569), (657, 31046), (722, 28251), (774, 26353), (817, 24966), (1083, 18834), (1314, 15523), (1387, 14706), (1634, 12483), (2166, 9417), (2451, 8322), (2774, 7353), (3139, 6498), (3249, 6278), (4161, 4902)]