21389368

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2671}}^1$

素因数の和:2708

約数の個数: 64

約数和(自身を含む): 53867520

約数和(自身を除く): 32478152

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 143, 154, 182, 286, 308, 364, 572, 616, 728, 1001, 1144, 2002, 2671, 4004, 5342, 8008, 10684, 18697, 21368, 29381, 34723, 37394, 58762, 69446, 74788, 117524, 138892, 149576, 205667, 235048, 243061, 277784, 381953, 411334, 486122, 763906, 822668, 972244, 1527812, 1645336, 1944488, 2673671, 3055624, 5347342, 10694684, 21389368]

約数ペア:

[(1, 21389368), (2, 10694684), (4, 5347342), (7, 3055624), (8, 2673671), (11, 1944488), (13, 1645336), (14, 1527812), (22, 972244), (26, 822668), (28, 763906), (44, 486122), (52, 411334), (56, 381953), (77, 277784), (88, 243061), (91, 235048), (104, 205667), (143, 149576), (154, 138892), (182, 117524), (286, 74788), (308, 69446), (364, 58762), (572, 37394), (616, 34723), (728, 29381), (1001, 21368), (1144, 18697), (2002, 10684), (2671, 8008), (4004, 5342)]