81266500

素因数分解:

$2^2\times 5^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:171

約数の個数: 144

約数和(自身を含む): 215115264

約数和(自身を除く): 133848764

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 49, 50, 62, 70, 98, 100, 107, 124, 125, 140, 155, 175, 196, 214, 217, 245, 250, 310, 350, 428, 434, 490, 500, 535, 620, 700, 749, 775, 868, 875, 980, 1070, 1085, 1225, 1498, 1519, 1550, 1750, 2140, 2170, 2450, 2675, 2996, 3038, 3100, 3317, 3500, 3745, 3875, 4340, 4900, 5243, 5350, 5425, 6076, 6125, 6634, 7490, 7595, 7750, 10486, 10700, 10850, 12250, 13268, 13375, 14980, 15190, 15500, 16585, 18725, 20972, 21700, 23219, 24500, 26215, 26750, 27125, 30380, 33170, 37450, 37975, 46438, 52430, 53500, 54250, 66340, 74900, 75950, 82925, 92876, 93625, 104860, 108500, 116095, 131075, 151900, 162533, 165850, 187250, 189875, 232190, 262150, 325066, 331700, 374500, 379750, 414625, 464380, 524300, 580475, 650132, 655375, 759500, 812665, 829250, 1160950, 1310750, 1625330, 1658500, 2321900, 2621500, 2902375, 3250660, 4063325, 5804750, 8126650, 11609500, 16253300, 20316625, 40633250, 81266500]

約数ペア:

[(1, 81266500), (2, 40633250), (4, 20316625), (5, 16253300), (7, 11609500), (10, 8126650), (14, 5804750), (20, 4063325), (25, 3250660), (28, 2902375), (31, 2621500), (35, 2321900), (49, 1658500), (50, 1625330), (62, 1310750), (70, 1160950), (98, 829250), (100, 812665), (107, 759500), (124, 655375), (125, 650132), (140, 580475), (155, 524300), (175, 464380), (196, 414625), (214, 379750), (217, 374500), (245, 331700), (250, 325066), (310, 262150), (350, 232190), (428, 189875), (434, 187250), (490, 165850), (500, 162533), (535, 151900), (620, 131075), (700, 116095), (749, 108500), (775, 104860), (868, 93625), (875, 92876), (980, 82925), (1070, 75950), (1085, 74900), (1225, 66340), (1498, 54250), (1519, 53500), (1550, 52430), (1750, 46438), (2140, 37975), (2170, 37450), (2450, 33170), (2675, 30380), (2996, 27125), (3038, 26750), (3100, 26215), (3317, 24500), (3500, 23219), (3745, 21700), (3875, 20972), (4340, 18725), (4900, 16585), (5243, 15500), (5350, 15190), (5425, 14980), (6076, 13375), (6125, 13268), (6634, 12250), (7490, 10850), (7595, 10700), (7750, 10486)]