16740620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{67}}^1$

素因数の和:151

約数の個数: 72

約数和(自身を含む): 39704112

約数和(自身を除く): 22963492

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 67, 124, 130, 134, 155, 260, 268, 310, 335, 403, 620, 670, 806, 871, 961, 1340, 1612, 1742, 1922, 2015, 2077, 3484, 3844, 4030, 4154, 4355, 4805, 8060, 8308, 8710, 9610, 10385, 12493, 17420, 19220, 20770, 24986, 27001, 41540, 49972, 54002, 62465, 64387, 108004, 124930, 128774, 135005, 249860, 257548, 270010, 321935, 540020, 643870, 837031, 1287740, 1674062, 3348124, 4185155, 8370310, 16740620]

約数ペア:

[(1, 16740620), (2, 8370310), (4, 4185155), (5, 3348124), (10, 1674062), (13, 1287740), (20, 837031), (26, 643870), (31, 540020), (52, 321935), (62, 270010), (65, 257548), (67, 249860), (124, 135005), (130, 128774), (134, 124930), (155, 108004), (260, 64387), (268, 62465), (310, 54002), (335, 49972), (403, 41540), (620, 27001), (670, 24986), (806, 20770), (871, 19220), (961, 17420), (1340, 12493), (1612, 10385), (1742, 9610), (1922, 8710), (2015, 8308), (2077, 8060), (3484, 4805), (3844, 4355), (4030, 4154)]