28388560

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11447}}^1$

素因数の和:11491

約数の個数: 40

約数和(自身を含む): 68138496

約数和(自身を除く): 39749936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 11447, 22894, 45788, 57235, 91576, 114470, 183152, 228940, 354857, 457880, 709714, 915760, 1419428, 1774285, 2838856, 3548570, 5677712, 7097140, 14194280, 28388560]

約数ペア:

[(1, 28388560), (2, 14194280), (4, 7097140), (5, 5677712), (8, 3548570), (10, 2838856), (16, 1774285), (20, 1419428), (31, 915760), (40, 709714), (62, 457880), (80, 354857), (124, 228940), (155, 183152), (248, 114470), (310, 91576), (496, 57235), (620, 45788), (1240, 22894), (2480, 11447)]