81897410

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{443}}^1$

素因数の和:615

約数の個数: 64

約数和(自身を含む): 179020800

約数和(自身を除く): 97123390

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 139, 190, 266, 278, 443, 665, 695, 886, 973, 1330, 1390, 1946, 2215, 2641, 3101, 4430, 4865, 5282, 6202, 8417, 9730, 13205, 15505, 16834, 18487, 26410, 31010, 36974, 42085, 58919, 61577, 84170, 92435, 117838, 123154, 184870, 294595, 307885, 431039, 589190, 615770, 862078, 1169963, 2155195, 2339926, 4310390, 5849815, 8189741, 11699630, 16379482, 40948705, 81897410]

約数ペア:

[(1, 81897410), (2, 40948705), (5, 16379482), (7, 11699630), (10, 8189741), (14, 5849815), (19, 4310390), (35, 2339926), (38, 2155195), (70, 1169963), (95, 862078), (133, 615770), (139, 589190), (190, 431039), (266, 307885), (278, 294595), (443, 184870), (665, 123154), (695, 117838), (886, 92435), (973, 84170), (1330, 61577), (1390, 58919), (1946, 42085), (2215, 36974), (2641, 31010), (3101, 26410), (4430, 18487), (4865, 16834), (5282, 15505), (6202, 13205), (8417, 9730)]