18980444

素因数分解:

$2^2\times 7^2\times {\mathrm{179}}^1\times {\mathrm{541}}^1$

素因数の和:738

約数の個数: 36

約数和(自身を含む): 38926440

約数和(自身を除く): 19945996

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 179, 196, 358, 541, 716, 1082, 1253, 2164, 2506, 3787, 5012, 7574, 8771, 15148, 17542, 26509, 35084, 53018, 96839, 106036, 193678, 387356, 677873, 1355746, 2711492, 4745111, 9490222, 18980444]

約数ペア:

[(1, 18980444), (2, 9490222), (4, 4745111), (7, 2711492), (14, 1355746), (28, 677873), (49, 387356), (98, 193678), (179, 106036), (196, 96839), (358, 53018), (541, 35084), (716, 26509), (1082, 17542), (1253, 15148), (2164, 8771), (2506, 7574), (3787, 5012)]