30999560

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{269}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 72705600

約数和(自身を除く): 41706040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 67, 86, 134, 172, 215, 268, 269, 335, 344, 430, 536, 538, 670, 860, 1076, 1340, 1345, 1720, 2152, 2680, 2690, 2881, 5380, 5762, 10760, 11524, 11567, 14405, 18023, 23048, 23134, 28810, 36046, 46268, 57620, 57835, 72092, 90115, 92536, 115240, 115670, 144184, 180230, 231340, 360460, 462680, 720920, 774989, 1549978, 3099956, 3874945, 6199912, 7749890, 15499780, 30999560]

約数ペア:

[(1, 30999560), (2, 15499780), (4, 7749890), (5, 6199912), (8, 3874945), (10, 3099956), (20, 1549978), (40, 774989), (43, 720920), (67, 462680), (86, 360460), (134, 231340), (172, 180230), (215, 144184), (268, 115670), (269, 115240), (335, 92536), (344, 90115), (430, 72092), (536, 57835), (538, 57620), (670, 46268), (860, 36046), (1076, 28810), (1340, 23134), (1345, 23048), (1720, 18023), (2152, 14405), (2680, 11567), (2690, 11524), (2881, 10760), (5380, 5762)]