12918940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{311}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 28514304

約数和(自身を除く): 15595364

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 67, 124, 134, 155, 268, 310, 311, 335, 620, 622, 670, 1244, 1340, 1555, 2077, 3110, 4154, 6220, 8308, 9641, 10385, 19282, 20770, 20837, 38564, 41540, 41674, 48205, 83348, 96410, 104185, 192820, 208370, 416740, 645947, 1291894, 2583788, 3229735, 6459470, 12918940]

約数ペア:

[(1, 12918940), (2, 6459470), (4, 3229735), (5, 2583788), (10, 1291894), (20, 645947), (31, 416740), (62, 208370), (67, 192820), (124, 104185), (134, 96410), (155, 83348), (268, 48205), (310, 41674), (311, 41540), (335, 38564), (620, 20837), (622, 20770), (670, 19282), (1244, 10385), (1340, 9641), (1555, 8308), (2077, 6220), (3110, 4154)]