18851120

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{3517}}^1$

素因数の和:3597

約数の個数: 40

約数和(自身を含む): 44495664

約数和(自身を除く): 25644544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 3517, 5360, 7034, 14068, 17585, 28136, 35170, 56272, 70340, 140680, 235639, 281360, 471278, 942556, 1178195, 1885112, 2356390, 3770224, 4712780, 9425560, 18851120]

約数ペア:

[(1, 18851120), (2, 9425560), (4, 4712780), (5, 3770224), (8, 2356390), (10, 1885112), (16, 1178195), (20, 942556), (40, 471278), (67, 281360), (80, 235639), (134, 140680), (268, 70340), (335, 56272), (536, 35170), (670, 28136), (1072, 17585), (1340, 14068), (2680, 7034), (3517, 5360)]