20342816

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{619}}^1$

素因数の和:721

約数の個数: 48

約数和(自身を含む): 43747200

約数和(自身を除く): 23404384

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 79, 104, 158, 208, 316, 416, 619, 632, 1027, 1238, 1264, 2054, 2476, 2528, 4108, 4952, 8047, 8216, 9904, 16094, 16432, 19808, 32188, 32864, 48901, 64376, 97802, 128752, 195604, 257504, 391208, 635713, 782416, 1271426, 1564832, 2542852, 5085704, 10171408, 20342816]

約数ペア:

[(1, 20342816), (2, 10171408), (4, 5085704), (8, 2542852), (13, 1564832), (16, 1271426), (26, 782416), (32, 635713), (52, 391208), (79, 257504), (104, 195604), (158, 128752), (208, 97802), (316, 64376), (416, 48901), (619, 32864), (632, 32188), (1027, 19808), (1238, 16432), (1264, 16094), (2054, 9904), (2476, 8216), (2528, 8047), (4108, 4952)]