21563008

素因数分解:

$2^7\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:237

約数の個数: 64

約数和(自身を含む): 45930600

約数和(自身を除く): 24367592

約数列:

[1, 2, 4, 8, 16, 29, 32, 37, 58, 64, 74, 116, 128, 148, 157, 232, 296, 314, 464, 592, 628, 928, 1073, 1184, 1256, 1856, 2146, 2368, 2512, 3712, 4292, 4553, 4736, 5024, 5809, 8584, 9106, 10048, 11618, 17168, 18212, 20096, 23236, 34336, 36424, 46472, 68672, 72848, 92944, 137344, 145696, 168461, 185888, 291392, 336922, 371776, 582784, 673844, 743552, 1347688, 2695376, 5390752, 10781504, 21563008]

約数ペア:

[(1, 21563008), (2, 10781504), (4, 5390752), (8, 2695376), (16, 1347688), (29, 743552), (32, 673844), (37, 582784), (58, 371776), (64, 336922), (74, 291392), (116, 185888), (128, 168461), (148, 145696), (157, 137344), (232, 92944), (296, 72848), (314, 68672), (464, 46472), (592, 36424), (628, 34336), (928, 23236), (1073, 20096), (1184, 18212), (1256, 17168), (1856, 11618), (2146, 10048), (2368, 9106), (2512, 8584), (3712, 5809), (4292, 5024), (4553, 4736)]