20147742580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{663191}}^1$

素因数の和:663245

約数の個数: 72

約数和(自身を含む): 50805812736

約数和(自身を除く): 30658070156

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 868, 980, 1085, 1519, 2170, 3038, 4340, 6076, 7595, 15190, 30380, 663191, 1326382, 2652764, 3315955, 4642337, 6631910, 9284674, 13263820, 18569348, 20558921, 23211685, 32496359, 41117842, 46423370, 64992718, 82235684, 92846740, 102794605, 129985436, 143912447, 162481795, 205589210, 287824894, 324963590, 411178420, 575649788, 649927180, 719562235, 1007387129, 1439124470, 2014774258, 2878248940, 4029548516, 5036935645, 10073871290, 20147742580]

約数ペア:

[(1, 20147742580), (2, 10073871290), (4, 5036935645), (5, 4029548516), (7, 2878248940), (10, 2014774258), (14, 1439124470), (20, 1007387129), (28, 719562235), (31, 649927180), (35, 575649788), (49, 411178420), (62, 324963590), (70, 287824894), (98, 205589210), (124, 162481795), (140, 143912447), (155, 129985436), (196, 102794605), (217, 92846740), (245, 82235684), (310, 64992718), (434, 46423370), (490, 41117842), (620, 32496359), (868, 23211685), (980, 20558921), (1085, 18569348), (1519, 13263820), (2170, 9284674), (3038, 6631910), (4340, 4642337), (6076, 3315955), (7595, 2652764), (15190, 1326382), (30380, 663191)]