13890440

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:222

約数の個数: 64

約数和(自身を含む): 32607360

約数和(自身を除く): 18716920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 71, 73, 134, 142, 146, 268, 284, 292, 335, 355, 365, 536, 568, 584, 670, 710, 730, 1340, 1420, 1460, 2680, 2840, 2920, 4757, 4891, 5183, 9514, 9782, 10366, 19028, 19564, 20732, 23785, 24455, 25915, 38056, 39128, 41464, 47570, 48910, 51830, 95140, 97820, 103660, 190280, 195640, 207320, 347261, 694522, 1389044, 1736305, 2778088, 3472610, 6945220, 13890440]

約数ペア:

[(1, 13890440), (2, 6945220), (4, 3472610), (5, 2778088), (8, 1736305), (10, 1389044), (20, 694522), (40, 347261), (67, 207320), (71, 195640), (73, 190280), (134, 103660), (142, 97820), (146, 95140), (268, 51830), (284, 48910), (292, 47570), (335, 41464), (355, 39128), (365, 38056), (536, 25915), (568, 24455), (584, 23785), (670, 20732), (710, 19564), (730, 19028), (1340, 10366), (1420, 9782), (1460, 9514), (2680, 5183), (2840, 4891), (2920, 4757)]