21065940

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{5573}}^1$

素因数の和:5598

約数の個数: 96

約数和(自身を含む): 74914560

約数和(自身を除く): 53848620

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 5573, 11146, 16719, 22292, 27865, 33438, 39011, 50157, 55730, 66876, 78022, 83595, 100314, 111460, 117033, 150471, 156044, 167190, 195055, 200628, 234066, 250785, 300942, 334380, 351099, 390110, 468132, 501570, 585165, 601884, 702198, 752355, 780220, 1003140, 1053297, 1170330, 1404396, 1504710, 1755495, 2106594, 2340660, 3009420, 3510990, 4213188, 5266485, 7021980, 10532970, 21065940]

約数ペア:

[(1, 21065940), (2, 10532970), (3, 7021980), (4, 5266485), (5, 4213188), (6, 3510990), (7, 3009420), (9, 2340660), (10, 2106594), (12, 1755495), (14, 1504710), (15, 1404396), (18, 1170330), (20, 1053297), (21, 1003140), (27, 780220), (28, 752355), (30, 702198), (35, 601884), (36, 585165), (42, 501570), (45, 468132), (54, 390110), (60, 351099), (63, 334380), (70, 300942), (84, 250785), (90, 234066), (105, 200628), (108, 195055), (126, 167190), (135, 156044), (140, 150471), (180, 117033), (189, 111460), (210, 100314), (252, 83595), (270, 78022), (315, 66876), (378, 55730), (420, 50157), (540, 39011), (630, 33438), (756, 27865), (945, 22292), (1260, 16719), (1890, 11146), (3780, 5573)]