81634420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{20107}}^1$

素因数の和:20152

約数の個数: 48

約数和(自身を含む): 202688640

約数和(自身を除く): 121054220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 20107, 40214, 80428, 100535, 140749, 201070, 281498, 402140, 562996, 583103, 703745, 1166206, 1407490, 2332412, 2814980, 2915515, 4081721, 5831030, 8163442, 11662060, 16326884, 20408605, 40817210, 81634420]

約数ペア:

[(1, 81634420), (2, 40817210), (4, 20408605), (5, 16326884), (7, 11662060), (10, 8163442), (14, 5831030), (20, 4081721), (28, 2915515), (29, 2814980), (35, 2332412), (58, 1407490), (70, 1166206), (116, 703745), (140, 583103), (145, 562996), (203, 402140), (290, 281498), (406, 201070), (580, 140749), (812, 100535), (1015, 80428), (2030, 40214), (4060, 20107)]