19137880

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{193}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 45116640

約数和(自身を除く): 25978760

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 67, 74, 134, 148, 185, 193, 268, 296, 335, 370, 386, 536, 670, 740, 772, 965, 1340, 1480, 1544, 1930, 2479, 2680, 3860, 4958, 7141, 7720, 9916, 12395, 12931, 14282, 19832, 24790, 25862, 28564, 35705, 49580, 51724, 57128, 64655, 71410, 99160, 103448, 129310, 142820, 258620, 285640, 478447, 517240, 956894, 1913788, 2392235, 3827576, 4784470, 9568940, 19137880]

約数ペア:

[(1, 19137880), (2, 9568940), (4, 4784470), (5, 3827576), (8, 2392235), (10, 1913788), (20, 956894), (37, 517240), (40, 478447), (67, 285640), (74, 258620), (134, 142820), (148, 129310), (185, 103448), (193, 99160), (268, 71410), (296, 64655), (335, 57128), (370, 51724), (386, 49580), (536, 35705), (670, 28564), (740, 25862), (772, 24790), (965, 19832), (1340, 14282), (1480, 12931), (1544, 12395), (1930, 9916), (2479, 7720), (2680, 7141), (3860, 4958)]