20563712

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 45671136

約数和(自身を除く): 25107424

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 37, 52, 64, 74, 104, 128, 148, 167, 208, 256, 296, 334, 416, 481, 592, 668, 832, 962, 1184, 1336, 1664, 1924, 2171, 2368, 2672, 3328, 3848, 4342, 4736, 5344, 6179, 7696, 8684, 9472, 10688, 12358, 15392, 17368, 21376, 24716, 30784, 34736, 42752, 49432, 61568, 69472, 80327, 98864, 123136, 138944, 160654, 197728, 277888, 321308, 395456, 555776, 642616, 790912, 1285232, 1581824, 2570464, 5140928, 10281856, 20563712]

約数ペア:

[(1, 20563712), (2, 10281856), (4, 5140928), (8, 2570464), (13, 1581824), (16, 1285232), (26, 790912), (32, 642616), (37, 555776), (52, 395456), (64, 321308), (74, 277888), (104, 197728), (128, 160654), (148, 138944), (167, 123136), (208, 98864), (256, 80327), (296, 69472), (334, 61568), (416, 49432), (481, 42752), (592, 34736), (668, 30784), (832, 24716), (962, 21376), (1184, 17368), (1336, 15392), (1664, 12358), (1924, 10688), (2171, 9472), (2368, 8684), (2672, 7696), (3328, 6179), (3848, 5344), (4342, 4736)]