18961516

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{199}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 39513600

約数和(自身を除く): 20552084

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 83, 164, 166, 199, 287, 332, 398, 574, 581, 796, 1148, 1162, 1393, 2324, 2786, 3403, 5572, 6806, 8159, 13612, 16318, 16517, 23821, 32636, 33034, 47642, 57113, 66068, 95284, 114226, 115619, 228452, 231238, 462476, 677197, 1354394, 2708788, 4740379, 9480758, 18961516]

約数ペア:

[(1, 18961516), (2, 9480758), (4, 4740379), (7, 2708788), (14, 1354394), (28, 677197), (41, 462476), (82, 231238), (83, 228452), (164, 115619), (166, 114226), (199, 95284), (287, 66068), (332, 57113), (398, 47642), (574, 33034), (581, 32636), (796, 23821), (1148, 16517), (1162, 16318), (1393, 13612), (2324, 8159), (2786, 6806), (3403, 5572)]