81503900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{193}}^1$

素因数の和:351

約数の個数: 72

約数和(自身を含む): 183884064

約数和(自身を除く): 102380164

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 103, 164, 193, 205, 206, 386, 410, 412, 515, 772, 820, 965, 1025, 1030, 1930, 2050, 2060, 2575, 3860, 4100, 4223, 4825, 5150, 7913, 8446, 9650, 10300, 15826, 16892, 19300, 19879, 21115, 31652, 39565, 39758, 42230, 79130, 79516, 84460, 99395, 105575, 158260, 197825, 198790, 211150, 395650, 397580, 422300, 496975, 791300, 815039, 993950, 1630078, 1987900, 3260156, 4075195, 8150390, 16300780, 20375975, 40751950, 81503900]

約数ペア:

[(1, 81503900), (2, 40751950), (4, 20375975), (5, 16300780), (10, 8150390), (20, 4075195), (25, 3260156), (41, 1987900), (50, 1630078), (82, 993950), (100, 815039), (103, 791300), (164, 496975), (193, 422300), (205, 397580), (206, 395650), (386, 211150), (410, 198790), (412, 197825), (515, 158260), (772, 105575), (820, 99395), (965, 84460), (1025, 79516), (1030, 79130), (1930, 42230), (2050, 39758), (2060, 39565), (2575, 31652), (3860, 21115), (4100, 19879), (4223, 19300), (4825, 16892), (5150, 15826), (7913, 10300), (8446, 9650)]