81336560

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32797}}^1$

素因数の和:32841

約数の個数: 40

約数和(自身を含む): 195213696

約数和(自身を除く): 113877136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 32797, 65594, 131188, 163985, 262376, 327970, 524752, 655940, 1016707, 1311880, 2033414, 2623760, 4066828, 5083535, 8133656, 10167070, 16267312, 20334140, 40668280, 81336560]

約数ペア:

[(1, 81336560), (2, 40668280), (4, 20334140), (5, 16267312), (8, 10167070), (10, 8133656), (16, 5083535), (20, 4066828), (31, 2623760), (40, 2033414), (62, 1311880), (80, 1016707), (124, 655940), (155, 524752), (248, 327970), (310, 262376), (496, 163985), (620, 131188), (1240, 65594), (2480, 32797)]