18983780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{457}}^1$

素因数の和:564

約数の個数: 48

約数和(自身を含む): 41857536

約数和(自身を除く): 22873756

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 67, 124, 134, 155, 268, 310, 335, 457, 620, 670, 914, 1340, 1828, 2077, 2285, 4154, 4570, 8308, 9140, 10385, 14167, 20770, 28334, 30619, 41540, 56668, 61238, 70835, 122476, 141670, 153095, 283340, 306190, 612380, 949189, 1898378, 3796756, 4745945, 9491890, 18983780]

約数ペア:

[(1, 18983780), (2, 9491890), (4, 4745945), (5, 3796756), (10, 1898378), (20, 949189), (31, 612380), (62, 306190), (67, 283340), (124, 153095), (134, 141670), (155, 122476), (268, 70835), (310, 61238), (335, 56668), (457, 41540), (620, 30619), (670, 28334), (914, 20770), (1340, 14167), (1828, 10385), (2077, 9140), (2285, 8308), (4154, 4570)]