20815158

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{569}}^1$

素因数の和:661

約数の個数: 64

約数和(自身を含む): 52093440

約数和(自身を除く): 31278282

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 67, 78, 91, 134, 182, 201, 273, 402, 469, 546, 569, 871, 938, 1138, 1407, 1707, 1742, 2613, 2814, 3414, 3983, 5226, 6097, 7397, 7966, 11949, 12194, 14794, 18291, 22191, 23898, 36582, 38123, 44382, 51779, 76246, 103558, 114369, 155337, 228738, 266861, 310674, 495599, 533722, 800583, 991198, 1486797, 1601166, 2973594, 3469193, 6938386, 10407579, 20815158]

約数ペア:

[(1, 20815158), (2, 10407579), (3, 6938386), (6, 3469193), (7, 2973594), (13, 1601166), (14, 1486797), (21, 991198), (26, 800583), (39, 533722), (42, 495599), (67, 310674), (78, 266861), (91, 228738), (134, 155337), (182, 114369), (201, 103558), (273, 76246), (402, 51779), (469, 44382), (546, 38123), (569, 36582), (871, 23898), (938, 22191), (1138, 18291), (1407, 14794), (1707, 12194), (1742, 11949), (2613, 7966), (2814, 7397), (3414, 6097), (3983, 5226)]