20398994

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1$

素因数の和:303

約数の個数: 48

約数和(自身を含む): 39398400

約数和(自身を除く): 18999406

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 127, 149, 154, 254, 298, 539, 889, 1043, 1078, 1397, 1639, 1778, 2086, 2794, 3278, 6223, 7301, 9779, 11473, 12446, 14602, 18923, 19558, 22946, 37846, 68453, 80311, 132461, 136906, 160622, 208153, 264922, 416306, 927227, 1457071, 1854454, 2914142, 10199497, 20398994]

約数ペア:

[(1, 20398994), (2, 10199497), (7, 2914142), (11, 1854454), (14, 1457071), (22, 927227), (49, 416306), (77, 264922), (98, 208153), (127, 160622), (149, 136906), (154, 132461), (254, 80311), (298, 68453), (539, 37846), (889, 22946), (1043, 19558), (1078, 18923), (1397, 14602), (1639, 12446), (1778, 11473), (2086, 9779), (2794, 7301), (3278, 6223)]