21115328

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{619}}^1$

素因数の和:685

約数の個数: 56

約数和(自身を含む): 46299120

約数和(自身を除く): 25183792

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 41, 52, 64, 82, 104, 164, 208, 328, 416, 533, 619, 656, 832, 1066, 1238, 1312, 2132, 2476, 2624, 4264, 4952, 8047, 8528, 9904, 16094, 17056, 19808, 25379, 32188, 34112, 39616, 50758, 64376, 101516, 128752, 203032, 257504, 329927, 406064, 515008, 659854, 812128, 1319708, 1624256, 2639416, 5278832, 10557664, 21115328]

約数ペア:

[(1, 21115328), (2, 10557664), (4, 5278832), (8, 2639416), (13, 1624256), (16, 1319708), (26, 812128), (32, 659854), (41, 515008), (52, 406064), (64, 329927), (82, 257504), (104, 203032), (164, 128752), (208, 101516), (328, 64376), (416, 50758), (533, 39616), (619, 34112), (656, 32188), (832, 25379), (1066, 19808), (1238, 17056), (1312, 16094), (2132, 9904), (2476, 8528), (2624, 8047), (4264, 4952)]