20138705188

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{620569}}^1$

素因数の和:620660

約数の個数: 48

約数和(自身を含む): 43092380800

約数和(自身を除く): 22953675612

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 61, 76, 122, 133, 244, 266, 427, 532, 854, 1159, 1708, 2318, 4636, 8113, 16226, 32452, 620569, 1241138, 2482276, 4343983, 8687966, 11790811, 17375932, 23581622, 37854709, 47163244, 75709418, 82535677, 151418836, 165071354, 264982963, 330142708, 529965926, 719239471, 1059931852, 1438478942, 2876957884, 5034676297, 10069352594, 20138705188]

約数ペア:

[(1, 20138705188), (2, 10069352594), (4, 5034676297), (7, 2876957884), (14, 1438478942), (19, 1059931852), (28, 719239471), (38, 529965926), (61, 330142708), (76, 264982963), (122, 165071354), (133, 151418836), (244, 82535677), (266, 75709418), (427, 47163244), (532, 37854709), (854, 23581622), (1159, 17375932), (1708, 11790811), (2318, 8687966), (4636, 4343983), (8113, 2482276), (16226, 1241138), (32452, 620569)]