2018969540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{47911}}^1$

素因数の和:47977

約数の個数: 72

約数和(自身を含む): 5046858432

約数和(自身を除く): 3027888892

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 49, 70, 86, 98, 140, 172, 196, 215, 245, 301, 430, 490, 602, 860, 980, 1204, 1505, 2107, 3010, 4214, 6020, 8428, 10535, 21070, 42140, 47911, 95822, 191644, 239555, 335377, 479110, 670754, 958220, 1341508, 1676885, 2060173, 2347639, 3353770, 4120346, 4695278, 6707540, 8240692, 9390556, 10300865, 11738195, 14421211, 20601730, 23476390, 28842422, 41203460, 46952780, 57684844, 72106055, 100948477, 144212110, 201896954, 288424220, 403793908, 504742385, 1009484770, 2018969540]

約数ペア:

[(1, 2018969540), (2, 1009484770), (4, 504742385), (5, 403793908), (7, 288424220), (10, 201896954), (14, 144212110), (20, 100948477), (28, 72106055), (35, 57684844), (43, 46952780), (49, 41203460), (70, 28842422), (86, 23476390), (98, 20601730), (140, 14421211), (172, 11738195), (196, 10300865), (215, 9390556), (245, 8240692), (301, 6707540), (430, 4695278), (490, 4120346), (602, 3353770), (860, 2347639), (980, 2060173), (1204, 1676885), (1505, 1341508), (2107, 958220), (3010, 670754), (4214, 479110), (6020, 335377), (8428, 239555), (10535, 191644), (21070, 95822), (42140, 47911)]