20202700

素因数分解:

$2^2\times 5^2\times 7^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:85

約数の個数: 144

約数和(自身を含む): 55552000

約数和(自身を除く): 35349300

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 25, 28, 31, 35, 38, 49, 50, 62, 70, 76, 95, 98, 100, 124, 133, 140, 155, 175, 190, 196, 217, 245, 266, 310, 343, 350, 380, 434, 475, 490, 532, 589, 620, 665, 686, 700, 775, 868, 931, 950, 980, 1085, 1178, 1225, 1330, 1372, 1519, 1550, 1715, 1862, 1900, 2170, 2356, 2450, 2660, 2945, 3038, 3100, 3325, 3430, 3724, 4123, 4340, 4655, 4900, 5425, 5890, 6076, 6517, 6650, 6860, 7595, 8246, 8575, 9310, 10633, 10850, 11780, 13034, 13300, 14725, 15190, 16492, 17150, 18620, 20615, 21266, 21700, 23275, 26068, 28861, 29450, 30380, 32585, 34300, 37975, 41230, 42532, 46550, 53165, 57722, 58900, 65170, 75950, 82460, 93100, 103075, 106330, 115444, 130340, 144305, 151900, 162925, 202027, 206150, 212660, 265825, 288610, 325850, 404054, 412300, 531650, 577220, 651700, 721525, 808108, 1010135, 1063300, 1443050, 2020270, 2886100, 4040540, 5050675, 10101350, 20202700]

約数ペア:

[(1, 20202700), (2, 10101350), (4, 5050675), (5, 4040540), (7, 2886100), (10, 2020270), (14, 1443050), (19, 1063300), (20, 1010135), (25, 808108), (28, 721525), (31, 651700), (35, 577220), (38, 531650), (49, 412300), (50, 404054), (62, 325850), (70, 288610), (76, 265825), (95, 212660), (98, 206150), (100, 202027), (124, 162925), (133, 151900), (140, 144305), (155, 130340), (175, 115444), (190, 106330), (196, 103075), (217, 93100), (245, 82460), (266, 75950), (310, 65170), (343, 58900), (350, 57722), (380, 53165), (434, 46550), (475, 42532), (490, 41230), (532, 37975), (589, 34300), (620, 32585), (665, 30380), (686, 29450), (700, 28861), (775, 26068), (868, 23275), (931, 21700), (950, 21266), (980, 20615), (1085, 18620), (1178, 17150), (1225, 16492), (1330, 15190), (1372, 14725), (1519, 13300), (1550, 13034), (1715, 11780), (1862, 10850), (1900, 10633), (2170, 9310), (2356, 8575), (2450, 8246), (2660, 7595), (2945, 6860), (3038, 6650), (3100, 6517), (3325, 6076), (3430, 5890), (3724, 5425), (4123, 4900), (4340, 4655)]