20121989305

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{577}}^1\times {\mathrm{653}}^1\times {\mathrm{971}}^1$

素因数の和:2217

約数の個数: 32

約数和(自身を含む): 26454791808

約数和(自身を除く): 6332802503

約数列:

[1, 5, 11, 55, 577, 653, 971, 2885, 3265, 4855, 6347, 7183, 10681, 31735, 35915, 53405, 376781, 560267, 634063, 1883905, 2801335, 3170315, 4144591, 6162937, 6974693, 20722955, 30814685, 34873465, 365854351, 1829271755, 4024397861, 20121989305]

約数ペア:

[(1, 20121989305), (5, 4024397861), (11, 1829271755), (55, 365854351), (577, 34873465), (653, 30814685), (971, 20722955), (2885, 6974693), (3265, 6162937), (4855, 4144591), (6347, 3170315), (7183, 2801335), (10681, 1883905), (31735, 634063), (35915, 560267), (53405, 376781)]