21012612

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^2\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:197

約数の個数: 72

約数和(自身を含む): 53432736

約数和(自身を除く): 32420124

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 73, 83, 102, 146, 166, 204, 219, 249, 289, 292, 332, 438, 498, 578, 867, 876, 996, 1156, 1241, 1411, 1734, 2482, 2822, 3468, 3723, 4233, 4964, 5644, 6059, 7446, 8466, 12118, 14892, 16932, 18177, 21097, 23987, 24236, 36354, 42194, 47974, 63291, 71961, 72708, 84388, 95948, 103003, 126582, 143922, 206006, 253164, 287844, 309009, 412012, 618018, 1236036, 1751051, 3502102, 5253153, 7004204, 10506306, 21012612]

約数ペア:

[(1, 21012612), (2, 10506306), (3, 7004204), (4, 5253153), (6, 3502102), (12, 1751051), (17, 1236036), (34, 618018), (51, 412012), (68, 309009), (73, 287844), (83, 253164), (102, 206006), (146, 143922), (166, 126582), (204, 103003), (219, 95948), (249, 84388), (289, 72708), (292, 71961), (332, 63291), (438, 47974), (498, 42194), (578, 36354), (867, 24236), (876, 23987), (996, 21097), (1156, 18177), (1241, 16932), (1411, 14892), (1734, 12118), (2482, 8466), (2822, 7446), (3468, 6059), (3723, 5644), (4233, 4964)]