21399627078

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^3\times {\mathrm{787}}^1$

素因数の和:943

約数の個数: 96

約数和(自身を含む): 50031696000

約数和(自身を除く): 28632068922

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 43, 57, 86, 114, 129, 171, 258, 342, 387, 774, 787, 817, 1574, 1634, 1849, 2361, 2451, 3698, 4722, 4902, 5547, 7083, 7353, 11094, 14166, 14706, 14953, 16641, 29906, 33282, 33841, 35131, 44859, 67682, 70262, 79507, 89718, 101523, 105393, 134577, 159014, 203046, 210786, 238521, 269154, 304569, 316179, 477042, 609138, 632358, 642979, 715563, 1285958, 1431126, 1455163, 1510633, 1928937, 2910326, 3021266, 3857874, 4365489, 4531899, 5786811, 8730978, 9063798, 11573622, 13096467, 13595697, 26192934, 27191394, 27648097, 55296194, 62572009, 82944291, 125144018, 165888582, 187716027, 248832873, 375432054, 497665746, 563148081, 1126296162, 1188868171, 2377736342, 3566604513, 7133209026, 10699813539, 21399627078]

約数ペア:

[(1, 21399627078), (2, 10699813539), (3, 7133209026), (6, 3566604513), (9, 2377736342), (18, 1188868171), (19, 1126296162), (38, 563148081), (43, 497665746), (57, 375432054), (86, 248832873), (114, 187716027), (129, 165888582), (171, 125144018), (258, 82944291), (342, 62572009), (387, 55296194), (774, 27648097), (787, 27191394), (817, 26192934), (1574, 13595697), (1634, 13096467), (1849, 11573622), (2361, 9063798), (2451, 8730978), (3698, 5786811), (4722, 4531899), (4902, 4365489), (5547, 3857874), (7083, 3021266), (7353, 2910326), (11094, 1928937), (14166, 1510633), (14706, 1455163), (14953, 1431126), (16641, 1285958), (29906, 715563), (33282, 642979), (33841, 632358), (35131, 609138), (44859, 477042), (67682, 316179), (70262, 304569), (79507, 269154), (89718, 238521), (101523, 210786), (105393, 203046), (134577, 159014)]