20728045380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49352489}}^1$

素因数の和:49352508

約数の個数: 48

約数和(自身を含む): 66329746560

約数和(自身を除く): 45601701180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49352489, 98704978, 148057467, 197409956, 246762445, 296114934, 345467423, 493524890, 592229868, 690934846, 740287335, 987049780, 1036402269, 1381869692, 1480574670, 1727337115, 2072804538, 2961149340, 3454674230, 4145609076, 5182011345, 6909348460, 10364022690, 20728045380]

約数ペア:

[(1, 20728045380), (2, 10364022690), (3, 6909348460), (4, 5182011345), (5, 4145609076), (6, 3454674230), (7, 2961149340), (10, 2072804538), (12, 1727337115), (14, 1480574670), (15, 1381869692), (20, 1036402269), (21, 987049780), (28, 740287335), (30, 690934846), (35, 592229868), (42, 493524890), (60, 345467423), (70, 296114934), (84, 246762445), (105, 197409956), (140, 148057467), (210, 98704978), (420, 49352489)]