21899488

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{863}}^1$

素因数の和:947

約数の個数: 48

約数和(自身を含む): 47246976

約数和(自身を除く): 25347488

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 61, 104, 122, 208, 244, 416, 488, 793, 863, 976, 1586, 1726, 1952, 3172, 3452, 6344, 6904, 11219, 12688, 13808, 22438, 25376, 27616, 44876, 52643, 89752, 105286, 179504, 210572, 359008, 421144, 684359, 842288, 1368718, 1684576, 2737436, 5474872, 10949744, 21899488]

約数ペア:

[(1, 21899488), (2, 10949744), (4, 5474872), (8, 2737436), (13, 1684576), (16, 1368718), (26, 842288), (32, 684359), (52, 421144), (61, 359008), (104, 210572), (122, 179504), (208, 105286), (244, 89752), (416, 52643), (488, 44876), (793, 27616), (863, 25376), (976, 22438), (1586, 13808), (1726, 12688), (1952, 11219), (3172, 6904), (3452, 6344)]