20209140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{373}}^1$

素因数の和:438

約数の個数: 144

約数和(自身を含む): 71879808

約数和(自身を除く): 51670668

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 43, 45, 60, 63, 70, 84, 86, 90, 105, 126, 129, 140, 172, 180, 210, 215, 252, 258, 301, 315, 373, 387, 420, 430, 516, 602, 630, 645, 746, 774, 860, 903, 1119, 1204, 1260, 1290, 1492, 1505, 1548, 1806, 1865, 1935, 2238, 2580, 2611, 2709, 3010, 3357, 3612, 3730, 3870, 4476, 4515, 5222, 5418, 5595, 6020, 6714, 7460, 7740, 7833, 9030, 10444, 10836, 11190, 13055, 13428, 13545, 15666, 16039, 16785, 18060, 22380, 23499, 26110, 27090, 31332, 32078, 33570, 39165, 46998, 48117, 52220, 54180, 64156, 67140, 78330, 80195, 93996, 96234, 112273, 117495, 144351, 156660, 160390, 192468, 224546, 234990, 240585, 288702, 320780, 336819, 449092, 469980, 481170, 561365, 577404, 673638, 721755, 962340, 1010457, 1122730, 1347276, 1443510, 1684095, 2020914, 2245460, 2887020, 3368190, 4041828, 5052285, 6736380, 10104570, 20209140]

約数ペア:

[(1, 20209140), (2, 10104570), (3, 6736380), (4, 5052285), (5, 4041828), (6, 3368190), (7, 2887020), (9, 2245460), (10, 2020914), (12, 1684095), (14, 1443510), (15, 1347276), (18, 1122730), (20, 1010457), (21, 962340), (28, 721755), (30, 673638), (35, 577404), (36, 561365), (42, 481170), (43, 469980), (45, 449092), (60, 336819), (63, 320780), (70, 288702), (84, 240585), (86, 234990), (90, 224546), (105, 192468), (126, 160390), (129, 156660), (140, 144351), (172, 117495), (180, 112273), (210, 96234), (215, 93996), (252, 80195), (258, 78330), (301, 67140), (315, 64156), (373, 54180), (387, 52220), (420, 48117), (430, 46998), (516, 39165), (602, 33570), (630, 32078), (645, 31332), (746, 27090), (774, 26110), (860, 23499), (903, 22380), (1119, 18060), (1204, 16785), (1260, 16039), (1290, 15666), (1492, 13545), (1505, 13428), (1548, 13055), (1806, 11190), (1865, 10836), (1935, 10444), (2238, 9030), (2580, 7833), (2611, 7740), (2709, 7460), (3010, 6714), (3357, 6020), (3612, 5595), (3730, 5418), (3870, 5222), (4476, 4515)]