20485738360

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{105401}}^1$

素因数の和:105568

約数の個数: 64

約数和(自身を含む): 47582678880

約数和(自身を除く): 27096940520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 113, 172, 215, 226, 344, 430, 452, 565, 860, 904, 1130, 1720, 2260, 4520, 4859, 9718, 19436, 24295, 38872, 48590, 97180, 105401, 194360, 210802, 421604, 527005, 843208, 1054010, 2108020, 4216040, 4532243, 9064486, 11910313, 18128972, 22661215, 23820626, 36257944, 45322430, 47641252, 59551565, 90644860, 95282504, 119103130, 181289720, 238206260, 476412520, 512143459, 1024286918, 2048573836, 2560717295, 4097147672, 5121434590, 10242869180, 20485738360]

約数ペア:

[(1, 20485738360), (2, 10242869180), (4, 5121434590), (5, 4097147672), (8, 2560717295), (10, 2048573836), (20, 1024286918), (40, 512143459), (43, 476412520), (86, 238206260), (113, 181289720), (172, 119103130), (215, 95282504), (226, 90644860), (344, 59551565), (430, 47641252), (452, 45322430), (565, 36257944), (860, 23820626), (904, 22661215), (1130, 18128972), (1720, 11910313), (2260, 9064486), (4520, 4532243), (4859, 4216040), (9718, 2108020), (19436, 1054010), (24295, 843208), (38872, 527005), (48590, 421604), (97180, 210802), (105401, 194360)]