89491280

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{12569}}^1$

素因数の和:12671

約数の個数: 40

約数和(自身を含む): 210421800

約数和(自身を除く): 120930520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 12569, 25138, 50276, 62845, 100552, 125690, 201104, 251380, 502760, 1005520, 1118641, 2237282, 4474564, 5593205, 8949128, 11186410, 17898256, 22372820, 44745640, 89491280]

約数ペア:

[(1, 89491280), (2, 44745640), (4, 22372820), (5, 17898256), (8, 11186410), (10, 8949128), (16, 5593205), (20, 4474564), (40, 2237282), (80, 1118641), (89, 1005520), (178, 502760), (356, 251380), (445, 201104), (712, 125690), (890, 100552), (1424, 62845), (1780, 50276), (3560, 25138), (7120, 12569)]