1281358620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{245471}}^1$

素因数の和:245515

約数の個数: 72

約数和(自身を含む): 4020831360

約数和(自身を除く): 2739472740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 5220, 245471, 490942, 736413, 981884, 1227355, 1472826, 2209239, 2454710, 2945652, 3682065, 4418478, 4909420, 7118659, 7364130, 8836956, 11046195, 14237318, 14728260, 21355977, 22092390, 28474636, 35593295, 42711954, 44184780, 64067931, 71186590, 85423908, 106779885, 128135862, 142373180, 213559770, 256271724, 320339655, 427119540, 640679310, 1281358620]

約数ペア:

[(1, 1281358620), (2, 640679310), (3, 427119540), (4, 320339655), (5, 256271724), (6, 213559770), (9, 142373180), (10, 128135862), (12, 106779885), (15, 85423908), (18, 71186590), (20, 64067931), (29, 44184780), (30, 42711954), (36, 35593295), (45, 28474636), (58, 22092390), (60, 21355977), (87, 14728260), (90, 14237318), (116, 11046195), (145, 8836956), (174, 7364130), (180, 7118659), (261, 4909420), (290, 4418478), (348, 3682065), (435, 2945652), (522, 2454710), (580, 2209239), (870, 1472826), (1044, 1227355), (1305, 981884), (1740, 736413), (2610, 490942), (5220, 245471)]