20348040080

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{503}}^1\times {\mathrm{3691}}^1$

素因数の和:4344

約数の個数: 80

約数和(自身を含む): 47762193024

約数和(自身を除く): 27414152944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 503, 548, 685, 1006, 1096, 1370, 2012, 2192, 2515, 2740, 3691, 4024, 5030, 5480, 7382, 8048, 10060, 10960, 14764, 18455, 20120, 29528, 36910, 40240, 59056, 68911, 73820, 137822, 147640, 275644, 295280, 344555, 505667, 551288, 689110, 1011334, 1102576, 1378220, 1856573, 2022668, 2528335, 2756440, 3713146, 4045336, 5056670, 5512880, 7426292, 8090672, 9282865, 10113340, 14852584, 18565730, 20226680, 29705168, 37131460, 40453360, 74262920, 148525840, 254350501, 508701002, 1017402004, 1271752505, 2034804008, 2543505010, 4069608016, 5087010020, 10174020040, 20348040080]

約数ペア:

[(1, 20348040080), (2, 10174020040), (4, 5087010020), (5, 4069608016), (8, 2543505010), (10, 2034804008), (16, 1271752505), (20, 1017402004), (40, 508701002), (80, 254350501), (137, 148525840), (274, 74262920), (503, 40453360), (548, 37131460), (685, 29705168), (1006, 20226680), (1096, 18565730), (1370, 14852584), (2012, 10113340), (2192, 9282865), (2515, 8090672), (2740, 7426292), (3691, 5512880), (4024, 5056670), (5030, 4045336), (5480, 3713146), (7382, 2756440), (8048, 2528335), (10060, 2022668), (10960, 1856573), (14764, 1378220), (18455, 1102576), (20120, 1011334), (29528, 689110), (36910, 551288), (40240, 505667), (59056, 344555), (68911, 295280), (73820, 275644), (137822, 147640)]