2991820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{311}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 6971328

約数和(自身を除く): 3979508

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 311, 370, 481, 622, 740, 962, 1244, 1555, 1924, 2405, 3110, 4043, 4810, 6220, 8086, 9620, 11507, 16172, 20215, 23014, 40430, 46028, 57535, 80860, 115070, 149591, 230140, 299182, 598364, 747955, 1495910, 2991820]

約数ペア:

[(1, 2991820), (2, 1495910), (4, 747955), (5, 598364), (10, 299182), (13, 230140), (20, 149591), (26, 115070), (37, 80860), (52, 57535), (65, 46028), (74, 40430), (130, 23014), (148, 20215), (185, 16172), (260, 11507), (311, 9620), (370, 8086), (481, 6220), (622, 4810), (740, 4043), (962, 3110), (1244, 2405), (1555, 1924)]