15958000

素因数分解:

$2^4\times 5^3\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:203

約数の個数: 80

約数和(自身を含む): 39461760

約数和(自身を除く): 23503760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 79, 80, 100, 101, 125, 158, 200, 202, 250, 316, 395, 400, 404, 500, 505, 632, 790, 808, 1000, 1010, 1264, 1580, 1616, 1975, 2000, 2020, 2525, 3160, 3950, 4040, 5050, 6320, 7900, 7979, 8080, 9875, 10100, 12625, 15800, 15958, 19750, 20200, 25250, 31600, 31916, 39500, 39895, 40400, 50500, 63832, 79000, 79790, 101000, 127664, 158000, 159580, 199475, 202000, 319160, 398950, 638320, 797900, 997375, 1595800, 1994750, 3191600, 3989500, 7979000, 15958000]

約数ペア:

[(1, 15958000), (2, 7979000), (4, 3989500), (5, 3191600), (8, 1994750), (10, 1595800), (16, 997375), (20, 797900), (25, 638320), (40, 398950), (50, 319160), (79, 202000), (80, 199475), (100, 159580), (101, 158000), (125, 127664), (158, 101000), (200, 79790), (202, 79000), (250, 63832), (316, 50500), (395, 40400), (400, 39895), (404, 39500), (500, 31916), (505, 31600), (632, 25250), (790, 20200), (808, 19750), (1000, 15958), (1010, 15800), (1264, 12625), (1580, 10100), (1616, 9875), (1975, 8080), (2000, 7979), (2020, 7900), (2525, 6320), (3160, 5050), (3950, 4040)]