20790045

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{379}}^1$

素因数の和:466

約数の個数: 48

約数和(自身を含む): 38413440

約数和(自身を除く): 17623395

約数列:

[1, 3, 5, 9, 15, 23, 45, 53, 69, 115, 159, 207, 265, 345, 379, 477, 795, 1035, 1137, 1219, 1895, 2385, 3411, 3657, 5685, 6095, 8717, 10971, 17055, 18285, 20087, 26151, 43585, 54855, 60261, 78453, 100435, 130755, 180783, 301305, 392265, 462001, 903915, 1386003, 2310005, 4158009, 6930015, 20790045]

約数ペア:

[(1, 20790045), (3, 6930015), (5, 4158009), (9, 2310005), (15, 1386003), (23, 903915), (45, 462001), (53, 392265), (69, 301305), (115, 180783), (159, 130755), (207, 100435), (265, 78453), (345, 60261), (379, 54855), (477, 43585), (795, 26151), (1035, 20087), (1137, 18285), (1219, 17055), (1895, 10971), (2385, 8717), (3411, 6095), (3657, 5685)]