201901880

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1\times {\mathrm{353}}^1$

素因数の和:624

約数の個数: 64

約数和(自身を含む): 463881600

約数和(自身を除く): 261979720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 181, 316, 353, 362, 395, 632, 706, 724, 790, 905, 1412, 1448, 1580, 1765, 1810, 2824, 3160, 3530, 3620, 7060, 7240, 14120, 14299, 27887, 28598, 55774, 57196, 63893, 71495, 111548, 114392, 127786, 139435, 142990, 223096, 255572, 278870, 285980, 319465, 511144, 557740, 571960, 638930, 1115480, 1277860, 2555720, 5047547, 10095094, 20190188, 25237735, 40380376, 50475470, 100950940, 201901880]

約数ペア:

[(1, 201901880), (2, 100950940), (4, 50475470), (5, 40380376), (8, 25237735), (10, 20190188), (20, 10095094), (40, 5047547), (79, 2555720), (158, 1277860), (181, 1115480), (316, 638930), (353, 571960), (362, 557740), (395, 511144), (632, 319465), (706, 285980), (724, 278870), (790, 255572), (905, 223096), (1412, 142990), (1448, 139435), (1580, 127786), (1765, 114392), (1810, 111548), (2824, 71495), (3160, 63893), (3530, 57196), (3620, 55774), (7060, 28598), (7240, 27887), (14120, 14299)]