20065864

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{641}}^1$

素因数の和:710

約数の個数: 64

約数和(自身を含む): 47456640

約数和(自身を除く): 27390776

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 43, 52, 56, 86, 91, 104, 172, 182, 301, 344, 364, 559, 602, 641, 728, 1118, 1204, 1282, 2236, 2408, 2564, 3913, 4472, 4487, 5128, 7826, 8333, 8974, 15652, 16666, 17948, 27563, 31304, 33332, 35896, 55126, 58331, 66664, 110252, 116662, 192941, 220504, 233324, 358319, 385882, 466648, 716638, 771764, 1433276, 1543528, 2508233, 2866552, 5016466, 10032932, 20065864]

約数ペア:

[(1, 20065864), (2, 10032932), (4, 5016466), (7, 2866552), (8, 2508233), (13, 1543528), (14, 1433276), (26, 771764), (28, 716638), (43, 466648), (52, 385882), (56, 358319), (86, 233324), (91, 220504), (104, 192941), (172, 116662), (182, 110252), (301, 66664), (344, 58331), (364, 55126), (559, 35896), (602, 33332), (641, 31304), (728, 27563), (1118, 17948), (1204, 16666), (1282, 15652), (2236, 8974), (2408, 8333), (2564, 7826), (3913, 5128), (4472, 4487)]