639778890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{181}}^1\times {\mathrm{1997}}^1$

素因数の和:2247

約数の個数: 64

約数和(自身を含む): 1570907520

約数和(自身を除く): 931128630

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 59, 118, 177, 181, 295, 354, 362, 543, 590, 885, 905, 1086, 1770, 1810, 1997, 2715, 3994, 5430, 5991, 9985, 10679, 11982, 19970, 21358, 29955, 32037, 53395, 59910, 64074, 106790, 117823, 160185, 235646, 320370, 353469, 361457, 589115, 706938, 722914, 1084371, 1178230, 1767345, 1807285, 2168742, 3534690, 3614570, 5421855, 10843710, 21325963, 42651926, 63977889, 106629815, 127955778, 213259630, 319889445, 639778890]

約数ペア:

[(1, 639778890), (2, 319889445), (3, 213259630), (5, 127955778), (6, 106629815), (10, 63977889), (15, 42651926), (30, 21325963), (59, 10843710), (118, 5421855), (177, 3614570), (181, 3534690), (295, 2168742), (354, 1807285), (362, 1767345), (543, 1178230), (590, 1084371), (885, 722914), (905, 706938), (1086, 589115), (1770, 361457), (1810, 353469), (1997, 320370), (2715, 235646), (3994, 160185), (5430, 117823), (5991, 106790), (9985, 64074), (10679, 59910), (11982, 53395), (19970, 32037), (21358, 29955)]