320342820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{762721}}^1$

素因数の和:762740

約数の個数: 48

約数和(自身を含む): 1025098368

約数和(自身を除く): 704755548

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, 762721, 1525442, 2288163, 3050884, 3813605, 4576326, 5339047, 7627210, 9152652, 10678094, 11440815, 15254420, 16017141, 21356188, 22881630, 26695235, 32034282, 45763260, 53390470, 64068564, 80085705, 106780940, 160171410, 320342820]

約数ペア:

[(1, 320342820), (2, 160171410), (3, 106780940), (4, 80085705), (5, 64068564), (6, 53390470), (7, 45763260), (10, 32034282), (12, 26695235), (14, 22881630), (15, 21356188), (20, 16017141), (21, 15254420), (28, 11440815), (30, 10678094), (35, 9152652), (42, 7627210), (60, 5339047), (70, 4576326), (84, 3813605), (105, 3050884), (140, 2288163), (210, 1525442), (420, 762721)]