31291400

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:164

約数の個数: 144

約数和(自身を含む): 88208640

約数和(自身を除く): 56917240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 31, 35, 40, 49, 50, 56, 62, 70, 98, 100, 103, 124, 140, 155, 175, 196, 200, 206, 217, 245, 248, 280, 310, 350, 392, 412, 434, 490, 515, 620, 700, 721, 775, 824, 868, 980, 1030, 1085, 1225, 1240, 1400, 1442, 1519, 1550, 1736, 1960, 2060, 2170, 2450, 2575, 2884, 3038, 3100, 3193, 3605, 4120, 4340, 4900, 5047, 5150, 5425, 5768, 6076, 6200, 6386, 7210, 7595, 8680, 9800, 10094, 10300, 10850, 12152, 12772, 14420, 15190, 15965, 18025, 20188, 20600, 21700, 22351, 25235, 25544, 28840, 30380, 31930, 36050, 37975, 40376, 43400, 44702, 50470, 60760, 63860, 72100, 75950, 79825, 89404, 100940, 111755, 126175, 127720, 144200, 151900, 156457, 159650, 178808, 201880, 223510, 252350, 303800, 312914, 319300, 447020, 504700, 558775, 625828, 638600, 782285, 894040, 1009400, 1117550, 1251656, 1564570, 2235100, 3129140, 3911425, 4470200, 6258280, 7822850, 15645700, 31291400]

約数ペア:

[(1, 31291400), (2, 15645700), (4, 7822850), (5, 6258280), (7, 4470200), (8, 3911425), (10, 3129140), (14, 2235100), (20, 1564570), (25, 1251656), (28, 1117550), (31, 1009400), (35, 894040), (40, 782285), (49, 638600), (50, 625828), (56, 558775), (62, 504700), (70, 447020), (98, 319300), (100, 312914), (103, 303800), (124, 252350), (140, 223510), (155, 201880), (175, 178808), (196, 159650), (200, 156457), (206, 151900), (217, 144200), (245, 127720), (248, 126175), (280, 111755), (310, 100940), (350, 89404), (392, 79825), (412, 75950), (434, 72100), (490, 63860), (515, 60760), (620, 50470), (700, 44702), (721, 43400), (775, 40376), (824, 37975), (868, 36050), (980, 31930), (1030, 30380), (1085, 28840), (1225, 25544), (1240, 25235), (1400, 22351), (1442, 21700), (1519, 20600), (1550, 20188), (1736, 18025), (1960, 15965), (2060, 15190), (2170, 14420), (2450, 12772), (2575, 12152), (2884, 10850), (3038, 10300), (3100, 10094), (3193, 9800), (3605, 8680), (4120, 7595), (4340, 7210), (4900, 6386), (5047, 6200), (5150, 6076), (5425, 5768)]