21178656

素因数分解:

$2^5\times 3^2\times {\mathrm{151}}^1\times {\mathrm{487}}^1$

素因数の和:654

約数の個数: 72

約数和(自身を含む): 60750144

約数和(自身を除く): 39571488

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 151, 288, 302, 453, 487, 604, 906, 974, 1208, 1359, 1461, 1812, 1948, 2416, 2718, 2922, 3624, 3896, 4383, 4832, 5436, 5844, 7248, 7792, 8766, 10872, 11688, 14496, 15584, 17532, 21744, 23376, 35064, 43488, 46752, 70128, 73537, 140256, 147074, 220611, 294148, 441222, 588296, 661833, 882444, 1176592, 1323666, 1764888, 2353184, 2647332, 3529776, 5294664, 7059552, 10589328, 21178656]

約数ペア:

[(1, 21178656), (2, 10589328), (3, 7059552), (4, 5294664), (6, 3529776), (8, 2647332), (9, 2353184), (12, 1764888), (16, 1323666), (18, 1176592), (24, 882444), (32, 661833), (36, 588296), (48, 441222), (72, 294148), (96, 220611), (144, 147074), (151, 140256), (288, 73537), (302, 70128), (453, 46752), (487, 43488), (604, 35064), (906, 23376), (974, 21744), (1208, 17532), (1359, 15584), (1461, 14496), (1812, 11688), (1948, 10872), (2416, 8766), (2718, 7792), (2922, 7248), (3624, 5844), (3896, 5436), (4383, 4832)]