21065800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{367}}^1$

素因数の和:431

約数の個数: 96

約数和(自身を含む): 57496320

約数和(自身を除く): 36430520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 41, 50, 56, 70, 82, 100, 140, 164, 175, 200, 205, 280, 287, 328, 350, 367, 410, 574, 700, 734, 820, 1025, 1148, 1400, 1435, 1468, 1640, 1835, 2050, 2296, 2569, 2870, 2936, 3670, 4100, 5138, 5740, 7175, 7340, 8200, 9175, 10276, 11480, 12845, 14350, 14680, 15047, 18350, 20552, 25690, 28700, 30094, 36700, 51380, 57400, 60188, 64225, 73400, 75235, 102760, 105329, 120376, 128450, 150470, 210658, 256900, 300940, 376175, 421316, 513800, 526645, 601880, 752350, 842632, 1053290, 1504700, 2106580, 2633225, 3009400, 4213160, 5266450, 10532900, 21065800]

約数ペア:

[(1, 21065800), (2, 10532900), (4, 5266450), (5, 4213160), (7, 3009400), (8, 2633225), (10, 2106580), (14, 1504700), (20, 1053290), (25, 842632), (28, 752350), (35, 601880), (40, 526645), (41, 513800), (50, 421316), (56, 376175), (70, 300940), (82, 256900), (100, 210658), (140, 150470), (164, 128450), (175, 120376), (200, 105329), (205, 102760), (280, 75235), (287, 73400), (328, 64225), (350, 60188), (367, 57400), (410, 51380), (574, 36700), (700, 30094), (734, 28700), (820, 25690), (1025, 20552), (1148, 18350), (1400, 15047), (1435, 14680), (1468, 14350), (1640, 12845), (1835, 11480), (2050, 10276), (2296, 9175), (2569, 8200), (2870, 7340), (2936, 7175), (3670, 5740), (4100, 5138)]