21840182

素因数分解:

$2^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:146

約数の個数: 64

約数和(自身を含む): 43008000

約数和(自身を除く): 21167818

約数列:

[1, 2, 7, 13, 14, 26, 31, 49, 62, 79, 91, 98, 158, 182, 217, 343, 403, 434, 553, 637, 686, 806, 1027, 1106, 1274, 1519, 2054, 2449, 2821, 3038, 3871, 4459, 4898, 5642, 7189, 7742, 8918, 10633, 14378, 17143, 19747, 21266, 27097, 31837, 34286, 39494, 50323, 54194, 63674, 100646, 120001, 138229, 222859, 240002, 276458, 352261, 445718, 704522, 840007, 1560013, 1680014, 3120026, 10920091, 21840182]

約数ペア:

[(1, 21840182), (2, 10920091), (7, 3120026), (13, 1680014), (14, 1560013), (26, 840007), (31, 704522), (49, 445718), (62, 352261), (79, 276458), (91, 240002), (98, 222859), (158, 138229), (182, 120001), (217, 100646), (343, 63674), (403, 54194), (434, 50323), (553, 39494), (637, 34286), (686, 31837), (806, 27097), (1027, 21266), (1106, 19747), (1274, 17143), (1519, 14378), (2054, 10633), (2449, 8918), (2821, 7742), (3038, 7189), (3871, 5642), (4459, 4898)]