81428165

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:330

約数の個数: 64

約数和(自身を含む): 130056192

約数和(自身を除く): 48628027

約数列:

[1, 5, 7, 13, 23, 31, 35, 65, 91, 115, 155, 161, 217, 251, 299, 403, 455, 713, 805, 1085, 1255, 1495, 1757, 2015, 2093, 2821, 3263, 3565, 4991, 5773, 7781, 8785, 9269, 10465, 14105, 16315, 22841, 24955, 28865, 38905, 40411, 46345, 54467, 64883, 75049, 101153, 114205, 178963, 202055, 272335, 324415, 375245, 505765, 525343, 708071, 894815, 1252741, 2326519, 2626715, 3540355, 6263705, 11632595, 16285633, 81428165]

約数ペア:

[(1, 81428165), (5, 16285633), (7, 11632595), (13, 6263705), (23, 3540355), (31, 2626715), (35, 2326519), (65, 1252741), (91, 894815), (115, 708071), (155, 525343), (161, 505765), (217, 375245), (251, 324415), (299, 272335), (403, 202055), (455, 178963), (713, 114205), (805, 101153), (1085, 75049), (1255, 64883), (1495, 54467), (1757, 46345), (2015, 40411), (2093, 38905), (2821, 28865), (3263, 24955), (3565, 22841), (4991, 16315), (5773, 14105), (7781, 10465), (8785, 9269)]