81322600

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{5147}}^1$

素因数の和:5242

約数の個数: 48

約数和(自身を含む): 191505600

約数和(自身を除く): 110183000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 158, 200, 316, 395, 632, 790, 1580, 1975, 3160, 3950, 5147, 7900, 10294, 15800, 20588, 25735, 41176, 51470, 102940, 128675, 205880, 257350, 406613, 514700, 813226, 1029400, 1626452, 2033065, 3252904, 4066130, 8132260, 10165325, 16264520, 20330650, 40661300, 81322600]

約数ペア:

[(1, 81322600), (2, 40661300), (4, 20330650), (5, 16264520), (8, 10165325), (10, 8132260), (20, 4066130), (25, 3252904), (40, 2033065), (50, 1626452), (79, 1029400), (100, 813226), (158, 514700), (200, 406613), (316, 257350), (395, 205880), (632, 128675), (790, 102940), (1580, 51470), (1975, 41176), (3160, 25735), (3950, 20588), (5147, 15800), (7900, 10294)]