81143120

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32719}}^1$

素因数の和:32763

約数の個数: 40

約数和(自身を含む): 194749440

約数和(自身を除く): 113606320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 32719, 65438, 130876, 163595, 261752, 327190, 523504, 654380, 1014289, 1308760, 2028578, 2617520, 4057156, 5071445, 8114312, 10142890, 16228624, 20285780, 40571560, 81143120]

約数ペア:

[(1, 81143120), (2, 40571560), (4, 20285780), (5, 16228624), (8, 10142890), (10, 8114312), (16, 5071445), (20, 4057156), (31, 2617520), (40, 2028578), (62, 1308760), (80, 1014289), (124, 654380), (155, 523504), (248, 327190), (310, 261752), (496, 163595), (620, 130876), (1240, 65438), (2480, 32719)]