20737840

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:206

約数の個数: 80

約数和(自身を含む): 50541408

約数和(自身を除く): 29803568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 67, 73, 80, 106, 134, 146, 212, 265, 268, 292, 335, 365, 424, 530, 536, 584, 670, 730, 848, 1060, 1072, 1168, 1340, 1460, 2120, 2680, 2920, 3551, 3869, 4240, 4891, 5360, 5840, 7102, 7738, 9782, 14204, 15476, 17755, 19345, 19564, 24455, 28408, 30952, 35510, 38690, 39128, 48910, 56816, 61904, 71020, 77380, 78256, 97820, 142040, 154760, 195640, 259223, 284080, 309520, 391280, 518446, 1036892, 1296115, 2073784, 2592230, 4147568, 5184460, 10368920, 20737840]

約数ペア:

[(1, 20737840), (2, 10368920), (4, 5184460), (5, 4147568), (8, 2592230), (10, 2073784), (16, 1296115), (20, 1036892), (40, 518446), (53, 391280), (67, 309520), (73, 284080), (80, 259223), (106, 195640), (134, 154760), (146, 142040), (212, 97820), (265, 78256), (268, 77380), (292, 71020), (335, 61904), (365, 56816), (424, 48910), (530, 39128), (536, 38690), (584, 35510), (670, 30952), (730, 28408), (848, 24455), (1060, 19564), (1072, 19345), (1168, 17755), (1340, 15476), (1460, 14204), (2120, 9782), (2680, 7738), (2920, 7102), (3551, 5840), (3869, 5360), (4240, 4891)]