19982040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12809}}^1$

素因数の和:12836

約数の個数: 64

約数和(自身を含む): 64562400

約数和(自身を除く): 44580360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 12809, 25618, 38427, 51236, 64045, 76854, 102472, 128090, 153708, 166517, 192135, 256180, 307416, 333034, 384270, 499551, 512360, 666068, 768540, 832585, 999102, 1332136, 1537080, 1665170, 1998204, 2497755, 3330340, 3996408, 4995510, 6660680, 9991020, 19982040]

約数ペア:

[(1, 19982040), (2, 9991020), (3, 6660680), (4, 4995510), (5, 3996408), (6, 3330340), (8, 2497755), (10, 1998204), (12, 1665170), (13, 1537080), (15, 1332136), (20, 999102), (24, 832585), (26, 768540), (30, 666068), (39, 512360), (40, 499551), (52, 384270), (60, 333034), (65, 307416), (78, 256180), (104, 192135), (120, 166517), (130, 153708), (156, 128090), (195, 102472), (260, 76854), (312, 64045), (390, 51236), (520, 38427), (780, 25618), (1560, 12809)]