814708520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{659}}^1\times {\mathrm{997}}^1$

素因数の和:1698

約数の個数: 64

約数和(自身を含む): 1896998400

約数和(自身を除く): 1082289880

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 659, 997, 1240, 1318, 1994, 2636, 3295, 3988, 4985, 5272, 6590, 7976, 9970, 13180, 19940, 20429, 26360, 30907, 39880, 40858, 61814, 81716, 102145, 123628, 154535, 163432, 204290, 247256, 309070, 408580, 618140, 657023, 817160, 1236280, 1314046, 2628092, 3285115, 5256184, 6570230, 13140460, 20367713, 26280920, 40735426, 81470852, 101838565, 162941704, 203677130, 407354260, 814708520]

約数ペア:

[(1, 814708520), (2, 407354260), (4, 203677130), (5, 162941704), (8, 101838565), (10, 81470852), (20, 40735426), (31, 26280920), (40, 20367713), (62, 13140460), (124, 6570230), (155, 5256184), (248, 3285115), (310, 2628092), (620, 1314046), (659, 1236280), (997, 817160), (1240, 657023), (1318, 618140), (1994, 408580), (2636, 309070), (3295, 247256), (3988, 204290), (4985, 163432), (5272, 154535), (6590, 123628), (7976, 102145), (9970, 81716), (13180, 61814), (19940, 40858), (20429, 39880), (26360, 30907)]