7979000

素因数分解:

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

素因数の和:201

約数の個数: 64

約数和(自身を含む): 19094400

約数和(自身を除く): 11115400

約数列:

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

約数ペア:

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