21821100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{10391}}^1$

素因数の和:10415

約数の個数: 72

約数和(自身を含む): 72162048

約数和(自身を除く): 50340948

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 10391, 20782, 31173, 41564, 51955, 62346, 72737, 103910, 124692, 145474, 155865, 207820, 218211, 259775, 290948, 311730, 363685, 436422, 519550, 623460, 727370, 779325, 872844, 1039100, 1091055, 1454740, 1558650, 1818425, 2182110, 3117300, 3636850, 4364220, 5455275, 7273700, 10910550, 21821100]

約数ペア:

[(1, 21821100), (2, 10910550), (3, 7273700), (4, 5455275), (5, 4364220), (6, 3636850), (7, 3117300), (10, 2182110), (12, 1818425), (14, 1558650), (15, 1454740), (20, 1091055), (21, 1039100), (25, 872844), (28, 779325), (30, 727370), (35, 623460), (42, 519550), (50, 436422), (60, 363685), (70, 311730), (75, 290948), (84, 259775), (100, 218211), (105, 207820), (140, 155865), (150, 145474), (175, 124692), (210, 103910), (300, 72737), (350, 62346), (420, 51955), (525, 41564), (700, 31173), (1050, 20782), (2100, 10391)]