15965900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:183

約数の個数: 72

約数和(自身を含む): 36664320

約数和(自身を除く): 20698420

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 47, 50, 79, 86, 94, 100, 158, 172, 188, 215, 235, 316, 395, 430, 470, 790, 860, 940, 1075, 1175, 1580, 1975, 2021, 2150, 2350, 3397, 3713, 3950, 4042, 4300, 4700, 6794, 7426, 7900, 8084, 10105, 13588, 14852, 16985, 18565, 20210, 33970, 37130, 40420, 50525, 67940, 74260, 84925, 92825, 101050, 159659, 169850, 185650, 202100, 319318, 339700, 371300, 638636, 798295, 1596590, 3193180, 3991475, 7982950, 15965900]

約数ペア:

[(1, 15965900), (2, 7982950), (4, 3991475), (5, 3193180), (10, 1596590), (20, 798295), (25, 638636), (43, 371300), (47, 339700), (50, 319318), (79, 202100), (86, 185650), (94, 169850), (100, 159659), (158, 101050), (172, 92825), (188, 84925), (215, 74260), (235, 67940), (316, 50525), (395, 40420), (430, 37130), (470, 33970), (790, 20210), (860, 18565), (940, 16985), (1075, 14852), (1175, 13588), (1580, 10105), (1975, 8084), (2021, 7900), (2150, 7426), (2350, 6794), (3397, 4700), (3713, 4300), (3950, 4042)]