18945700

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 43747200

約数和(自身を除く): 24801500

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 47, 50, 58, 94, 100, 116, 139, 145, 188, 235, 278, 290, 470, 556, 580, 695, 725, 940, 1175, 1363, 1390, 1450, 2350, 2726, 2780, 2900, 3475, 4031, 4700, 5452, 6533, 6815, 6950, 8062, 13066, 13630, 13900, 16124, 20155, 26132, 27260, 32665, 34075, 40310, 65330, 68150, 80620, 100775, 130660, 136300, 163325, 189457, 201550, 326650, 378914, 403100, 653300, 757828, 947285, 1894570, 3789140, 4736425, 9472850, 18945700]

約数ペア:

[(1, 18945700), (2, 9472850), (4, 4736425), (5, 3789140), (10, 1894570), (20, 947285), (25, 757828), (29, 653300), (47, 403100), (50, 378914), (58, 326650), (94, 201550), (100, 189457), (116, 163325), (139, 136300), (145, 130660), (188, 100775), (235, 80620), (278, 68150), (290, 65330), (470, 40310), (556, 34075), (580, 32665), (695, 27260), (725, 26132), (940, 20155), (1175, 16124), (1363, 13900), (1390, 13630), (1450, 13066), (2350, 8062), (2726, 6950), (2780, 6815), (2900, 6533), (3475, 5452), (4031, 4700)]