20193148880

素因数分解:

$2^4\times 5^1\times {\mathrm{3499}}^1\times {\mathrm{72139}}^1$

素因数の和:75651

約数の個数: 40

約数和(自身を含む): 46963140000

約数和(自身を除く): 26769991120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3499, 6998, 13996, 17495, 27992, 34990, 55984, 69980, 72139, 139960, 144278, 279920, 288556, 360695, 577112, 721390, 1154224, 1442780, 2885560, 5771120, 252414361, 504828722, 1009657444, 1262071805, 2019314888, 2524143610, 4038629776, 5048287220, 10096574440, 20193148880]

約数ペア:

[(1, 20193148880), (2, 10096574440), (4, 5048287220), (5, 4038629776), (8, 2524143610), (10, 2019314888), (16, 1262071805), (20, 1009657444), (40, 504828722), (80, 252414361), (3499, 5771120), (6998, 2885560), (13996, 1442780), (17495, 1154224), (27992, 721390), (34990, 577112), (55984, 360695), (69980, 288556), (72139, 279920), (139960, 144278)]