20957300

素因数分解:

$2^2\times 5^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1$

素因数の和:95

約数の個数: 144

約数和(自身を含む): 58329600

約数和(自身を除く): 37372300

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 47, 49, 50, 52, 65, 70, 91, 94, 98, 100, 130, 140, 175, 182, 188, 196, 235, 245, 260, 325, 329, 343, 350, 364, 455, 470, 490, 611, 637, 650, 658, 686, 700, 910, 940, 980, 1175, 1222, 1225, 1274, 1300, 1316, 1372, 1645, 1715, 1820, 2275, 2303, 2350, 2444, 2450, 2548, 3055, 3185, 3290, 3430, 4277, 4459, 4550, 4606, 4700, 4900, 6110, 6370, 6580, 6860, 8225, 8554, 8575, 8918, 9100, 9212, 11515, 12220, 12740, 15275, 15925, 16121, 16450, 17108, 17150, 17836, 21385, 22295, 23030, 29939, 30550, 31850, 32242, 32900, 34300, 42770, 44590, 46060, 57575, 59878, 61100, 63700, 64484, 80605, 85540, 89180, 106925, 111475, 115150, 119756, 149695, 161210, 209573, 213850, 222950, 230300, 299390, 322420, 403025, 419146, 427700, 445900, 598780, 748475, 806050, 838292, 1047865, 1496950, 1612100, 2095730, 2993900, 4191460, 5239325, 10478650, 20957300]

約数ペア:

[(1, 20957300), (2, 10478650), (4, 5239325), (5, 4191460), (7, 2993900), (10, 2095730), (13, 1612100), (14, 1496950), (20, 1047865), (25, 838292), (26, 806050), (28, 748475), (35, 598780), (47, 445900), (49, 427700), (50, 419146), (52, 403025), (65, 322420), (70, 299390), (91, 230300), (94, 222950), (98, 213850), (100, 209573), (130, 161210), (140, 149695), (175, 119756), (182, 115150), (188, 111475), (196, 106925), (235, 89180), (245, 85540), (260, 80605), (325, 64484), (329, 63700), (343, 61100), (350, 59878), (364, 57575), (455, 46060), (470, 44590), (490, 42770), (611, 34300), (637, 32900), (650, 32242), (658, 31850), (686, 30550), (700, 29939), (910, 23030), (940, 22295), (980, 21385), (1175, 17836), (1222, 17150), (1225, 17108), (1274, 16450), (1300, 16121), (1316, 15925), (1372, 15275), (1645, 12740), (1715, 12220), (1820, 11515), (2275, 9212), (2303, 9100), (2350, 8918), (2444, 8575), (2450, 8554), (2548, 8225), (3055, 6860), (3185, 6580), (3290, 6370), (3430, 6110), (4277, 4900), (4459, 4700), (4550, 4606)]