31315900

素因数分解:

$2^2\times 5^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{83}}^1$

素因数の和:129

約数の個数: 144

約数和(自身を含む): 87494400

約数和(自身を除く): 56178500

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 49, 50, 55, 70, 77, 83, 98, 100, 110, 140, 154, 166, 175, 196, 220, 245, 275, 308, 332, 343, 350, 385, 415, 490, 539, 550, 581, 686, 700, 770, 830, 913, 980, 1078, 1100, 1162, 1225, 1372, 1540, 1660, 1715, 1826, 1925, 2075, 2156, 2324, 2450, 2695, 2905, 3430, 3652, 3773, 3850, 4067, 4150, 4565, 4900, 5390, 5810, 6391, 6860, 7546, 7700, 8134, 8300, 8575, 9130, 10780, 11620, 12782, 13475, 14525, 15092, 16268, 17150, 18260, 18865, 20335, 22825, 25564, 26950, 28469, 29050, 31955, 34300, 37730, 40670, 44737, 45650, 53900, 56938, 58100, 63910, 75460, 81340, 89474, 91300, 94325, 101675, 113876, 127820, 142345, 159775, 178948, 188650, 203350, 223685, 284690, 313159, 319550, 377300, 406700, 447370, 569380, 626318, 639100, 711725, 894740, 1118425, 1252636, 1423450, 1565795, 2236850, 2846900, 3131590, 4473700, 6263180, 7828975, 15657950, 31315900]

約数ペア:

[(1, 31315900), (2, 15657950), (4, 7828975), (5, 6263180), (7, 4473700), (10, 3131590), (11, 2846900), (14, 2236850), (20, 1565795), (22, 1423450), (25, 1252636), (28, 1118425), (35, 894740), (44, 711725), (49, 639100), (50, 626318), (55, 569380), (70, 447370), (77, 406700), (83, 377300), (98, 319550), (100, 313159), (110, 284690), (140, 223685), (154, 203350), (166, 188650), (175, 178948), (196, 159775), (220, 142345), (245, 127820), (275, 113876), (308, 101675), (332, 94325), (343, 91300), (350, 89474), (385, 81340), (415, 75460), (490, 63910), (539, 58100), (550, 56938), (581, 53900), (686, 45650), (700, 44737), (770, 40670), (830, 37730), (913, 34300), (980, 31955), (1078, 29050), (1100, 28469), (1162, 26950), (1225, 25564), (1372, 22825), (1540, 20335), (1660, 18865), (1715, 18260), (1826, 17150), (1925, 16268), (2075, 15092), (2156, 14525), (2324, 13475), (2450, 12782), (2695, 11620), (2905, 10780), (3430, 9130), (3652, 8575), (3773, 8300), (3850, 8134), (4067, 7700), (4150, 7546), (4565, 6860), (4900, 6391), (5390, 5810)]