1212842820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{2887721}}^1$

素因数の和:2887740

約数の個数: 48

約数和(自身を含む): 3881098368

約数和(自身を除く): 2668255548

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, 2887721, 5775442, 8663163, 11550884, 14438605, 17326326, 20214047, 28877210, 34652652, 40428094, 43315815, 57754420, 60642141, 80856188, 86631630, 101070235, 121284282, 173263260, 202140470, 242568564, 303210705, 404280940, 606421410, 1212842820]

約数ペア:

[(1, 1212842820), (2, 606421410), (3, 404280940), (4, 303210705), (5, 242568564), (6, 202140470), (7, 173263260), (10, 121284282), (12, 101070235), (14, 86631630), (15, 80856188), (20, 60642141), (21, 57754420), (28, 43315815), (30, 40428094), (35, 34652652), (42, 28877210), (60, 20214047), (70, 17326326), (84, 14438605), (105, 11550884), (140, 8663163), (210, 5775442), (420, 2887721)]