20855024720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{807083}}^1$

素因数の和:807132

約数の個数: 80

約数和(自身を含む): 54042344640

約数和(自身を除く): 33187319920

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 170, 190, 272, 304, 323, 340, 380, 646, 680, 760, 1292, 1360, 1520, 1615, 2584, 3230, 5168, 6460, 12920, 25840, 807083, 1614166, 3228332, 4035415, 6456664, 8070830, 12913328, 13720411, 15334577, 16141660, 27440822, 30669154, 32283320, 54881644, 61338308, 64566640, 68602055, 76672885, 109763288, 122676616, 137204110, 153345770, 219526576, 245353232, 260687809, 274408220, 306691540, 521375618, 548816440, 613383080, 1042751236, 1097632880, 1226766160, 1303439045, 2085502472, 2606878090, 4171004944, 5213756180, 10427512360, 20855024720]

約数ペア:

[(1, 20855024720), (2, 10427512360), (4, 5213756180), (5, 4171004944), (8, 2606878090), (10, 2085502472), (16, 1303439045), (17, 1226766160), (19, 1097632880), (20, 1042751236), (34, 613383080), (38, 548816440), (40, 521375618), (68, 306691540), (76, 274408220), (80, 260687809), (85, 245353232), (95, 219526576), (136, 153345770), (152, 137204110), (170, 122676616), (190, 109763288), (272, 76672885), (304, 68602055), (323, 64566640), (340, 61338308), (380, 54881644), (646, 32283320), (680, 30669154), (760, 27440822), (1292, 16141660), (1360, 15334577), (1520, 13720411), (1615, 12913328), (2584, 8070830), (3230, 6456664), (5168, 4035415), (6460, 3228332), (12920, 1614166), (25840, 807083)]