21889408

素因数分解:

$2^7\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 46181520

約数和(自身を除く): 24292112

約数列:

[1, 2, 4, 8, 16, 32, 41, 43, 64, 82, 86, 97, 128, 164, 172, 194, 328, 344, 388, 656, 688, 776, 1312, 1376, 1552, 1763, 2624, 2752, 3104, 3526, 3977, 4171, 5248, 5504, 6208, 7052, 7954, 8342, 12416, 14104, 15908, 16684, 28208, 31816, 33368, 56416, 63632, 66736, 112832, 127264, 133472, 171011, 225664, 254528, 266944, 342022, 509056, 533888, 684044, 1368088, 2736176, 5472352, 10944704, 21889408]

約数ペア:

[(1, 21889408), (2, 10944704), (4, 5472352), (8, 2736176), (16, 1368088), (32, 684044), (41, 533888), (43, 509056), (64, 342022), (82, 266944), (86, 254528), (97, 225664), (128, 171011), (164, 133472), (172, 127264), (194, 112832), (328, 66736), (344, 63632), (388, 56416), (656, 33368), (688, 31816), (776, 28208), (1312, 16684), (1376, 15908), (1552, 14104), (1763, 12416), (2624, 8342), (2752, 7954), (3104, 7052), (3526, 6208), (3977, 5504), (4171, 5248)]