81121640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{106739}}^1$

素因数の和:106769

約数の個数: 32

約数和(自身を含む): 192132000

約数和(自身を除く): 111010360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 106739, 213478, 426956, 533695, 853912, 1067390, 2028041, 2134780, 4056082, 4269560, 8112164, 10140205, 16224328, 20280410, 40560820, 81121640]

約数ペア:

[(1, 81121640), (2, 40560820), (4, 20280410), (5, 16224328), (8, 10140205), (10, 8112164), (19, 4269560), (20, 4056082), (38, 2134780), (40, 2028041), (76, 1067390), (95, 853912), (152, 533695), (190, 426956), (380, 213478), (760, 106739)]