20829840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{229}}^1\times {\mathrm{379}}^1$

素因数の和:624

約数の個数: 80

約数和(自身を含む): 65025600

約数和(自身を除く): 44195760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 229, 240, 379, 458, 687, 758, 916, 1137, 1145, 1374, 1516, 1832, 1895, 2274, 2290, 2748, 3032, 3435, 3664, 3790, 4548, 4580, 5496, 5685, 6064, 6870, 7580, 9096, 9160, 10992, 11370, 13740, 15160, 18192, 18320, 22740, 27480, 30320, 45480, 54960, 86791, 90960, 173582, 260373, 347164, 433955, 520746, 694328, 867910, 1041492, 1301865, 1388656, 1735820, 2082984, 2603730, 3471640, 4165968, 5207460, 6943280, 10414920, 20829840]

約数ペア:

[(1, 20829840), (2, 10414920), (3, 6943280), (4, 5207460), (5, 4165968), (6, 3471640), (8, 2603730), (10, 2082984), (12, 1735820), (15, 1388656), (16, 1301865), (20, 1041492), (24, 867910), (30, 694328), (40, 520746), (48, 433955), (60, 347164), (80, 260373), (120, 173582), (229, 90960), (240, 86791), (379, 54960), (458, 45480), (687, 30320), (758, 27480), (916, 22740), (1137, 18320), (1145, 18192), (1374, 15160), (1516, 13740), (1832, 11370), (1895, 10992), (2274, 9160), (2290, 9096), (2748, 7580), (3032, 6870), (3435, 6064), (3664, 5685), (3790, 5496), (4548, 4580)]