20816810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 45287424

約数和(自身を除く): 24470614

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 53, 62, 70, 106, 155, 181, 217, 265, 310, 362, 371, 434, 530, 742, 905, 1085, 1267, 1643, 1810, 1855, 2170, 2534, 3286, 3710, 5611, 6335, 8215, 9593, 11222, 11501, 12670, 16430, 19186, 23002, 28055, 39277, 47965, 56110, 57505, 67151, 78554, 95930, 115010, 134302, 196385, 297383, 335755, 392770, 594766, 671510, 1486915, 2081681, 2973830, 4163362, 10408405, 20816810]

約数ペア:

[(1, 20816810), (2, 10408405), (5, 4163362), (7, 2973830), (10, 2081681), (14, 1486915), (31, 671510), (35, 594766), (53, 392770), (62, 335755), (70, 297383), (106, 196385), (155, 134302), (181, 115010), (217, 95930), (265, 78554), (310, 67151), (362, 57505), (371, 56110), (434, 47965), (530, 39277), (742, 28055), (905, 23002), (1085, 19186), (1267, 16430), (1643, 12670), (1810, 11501), (1855, 11222), (2170, 9593), (2534, 8215), (3286, 6335), (3710, 5611)]