25659440

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{7823}}^1$

素因数の和:7877

約数の個数: 40

約数和(自身を含む): 61121088

約数和(自身を除く): 35461648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 7823, 15646, 31292, 39115, 62584, 78230, 125168, 156460, 312920, 320743, 625840, 641486, 1282972, 1603715, 2565944, 3207430, 5131888, 6414860, 12829720, 25659440]

約数ペア:

[(1, 25659440), (2, 12829720), (4, 6414860), (5, 5131888), (8, 3207430), (10, 2565944), (16, 1603715), (20, 1282972), (40, 641486), (41, 625840), (80, 320743), (82, 312920), (164, 156460), (205, 125168), (328, 78230), (410, 62584), (656, 39115), (820, 31292), (1640, 15646), (3280, 7823)]