21205836

素因数分解:

$2^2\times 3^2\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1$

素因数の和:291

約数の個数: 72

約数和(自身を含む): 55770624

約数和(自身を除く): 34564788

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 47, 83, 94, 141, 151, 166, 188, 249, 282, 302, 332, 423, 453, 498, 564, 604, 747, 846, 906, 996, 1359, 1494, 1692, 1812, 2718, 2988, 3901, 5436, 7097, 7802, 11703, 12533, 14194, 15604, 21291, 23406, 25066, 28388, 35109, 37599, 42582, 46812, 50132, 63873, 70218, 75198, 85164, 112797, 127746, 140436, 150396, 225594, 255492, 451188, 589051, 1178102, 1767153, 2356204, 3534306, 5301459, 7068612, 10602918, 21205836]

約数ペア:

[(1, 21205836), (2, 10602918), (3, 7068612), (4, 5301459), (6, 3534306), (9, 2356204), (12, 1767153), (18, 1178102), (36, 589051), (47, 451188), (83, 255492), (94, 225594), (141, 150396), (151, 140436), (166, 127746), (188, 112797), (249, 85164), (282, 75198), (302, 70218), (332, 63873), (423, 50132), (453, 46812), (498, 42582), (564, 37599), (604, 35109), (747, 28388), (846, 25066), (906, 23406), (996, 21291), (1359, 15604), (1494, 14194), (1692, 12533), (1812, 11703), (2718, 7802), (2988, 7097), (3901, 5436)]