8181320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{479}}^1$

素因数の和:558

約数の個数: 64

約数和(自身を含む): 21427200

約数和(自身を除く): 13245880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 122, 140, 244, 280, 305, 427, 479, 488, 610, 854, 958, 1220, 1708, 1916, 2135, 2395, 2440, 3353, 3416, 3832, 4270, 4790, 6706, 8540, 9580, 13412, 16765, 17080, 19160, 26824, 29219, 33530, 58438, 67060, 116876, 134120, 146095, 204533, 233752, 292190, 409066, 584380, 818132, 1022665, 1168760, 1636264, 2045330, 4090660, 8181320]

約数ペア:

[(1, 8181320), (2, 4090660), (4, 2045330), (5, 1636264), (7, 1168760), (8, 1022665), (10, 818132), (14, 584380), (20, 409066), (28, 292190), (35, 233752), (40, 204533), (56, 146095), (61, 134120), (70, 116876), (122, 67060), (140, 58438), (244, 33530), (280, 29219), (305, 26824), (427, 19160), (479, 17080), (488, 16765), (610, 13412), (854, 9580), (958, 8540), (1220, 6706), (1708, 4790), (1916, 4270), (2135, 3832), (2395, 3416), (2440, 3353)]