81220496

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:352

約数の個数: 80

約数和(自身を含む): 188083200

約数和(自身を除く): 106862704

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 56, 62, 112, 124, 149, 157, 217, 248, 298, 314, 434, 496, 596, 628, 868, 1043, 1099, 1192, 1256, 1736, 2086, 2198, 2384, 2512, 3472, 4172, 4396, 4619, 4867, 8344, 8792, 9238, 9734, 16688, 17584, 18476, 19468, 23393, 32333, 34069, 36952, 38936, 46786, 64666, 68138, 73904, 77872, 93572, 129332, 136276, 163751, 187144, 258664, 272552, 327502, 374288, 517328, 545104, 655004, 725183, 1310008, 1450366, 2620016, 2900732, 5076281, 5801464, 10152562, 11602928, 20305124, 40610248, 81220496]

約数ペア:

[(1, 81220496), (2, 40610248), (4, 20305124), (7, 11602928), (8, 10152562), (14, 5801464), (16, 5076281), (28, 2900732), (31, 2620016), (56, 1450366), (62, 1310008), (112, 725183), (124, 655004), (149, 545104), (157, 517328), (217, 374288), (248, 327502), (298, 272552), (314, 258664), (434, 187144), (496, 163751), (596, 136276), (628, 129332), (868, 93572), (1043, 77872), (1099, 73904), (1192, 68138), (1256, 64666), (1736, 46786), (2086, 38936), (2198, 36952), (2384, 34069), (2512, 32333), (3472, 23393), (4172, 19468), (4396, 18476), (4619, 17584), (4867, 16688), (8344, 9734), (8792, 9238)]