19785350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:585

約数の個数: 48

約数和(自身を含む): 40362000

約数和(自身を除く): 20576650

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 61, 65, 122, 130, 305, 325, 499, 610, 650, 793, 998, 1525, 1586, 2495, 3050, 3965, 4990, 6487, 7930, 12475, 12974, 19825, 24950, 30439, 32435, 39650, 60878, 64870, 152195, 162175, 304390, 324350, 395707, 760975, 791414, 1521950, 1978535, 3957070, 9892675, 19785350]

約数ペア:

[(1, 19785350), (2, 9892675), (5, 3957070), (10, 1978535), (13, 1521950), (25, 791414), (26, 760975), (50, 395707), (61, 324350), (65, 304390), (122, 162175), (130, 152195), (305, 64870), (325, 60878), (499, 39650), (610, 32435), (650, 30439), (793, 24950), (998, 19825), (1525, 12974), (1586, 12475), (2495, 7930), (3050, 6487), (3965, 4990)]