20486173840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{673}}^1\times {\mathrm{34591}}^1$

素因数の和:35288

約数の個数: 80

約数和(自身を含む): 52039097856

約数和(自身を除く): 31552924016

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 673, 880, 1346, 2692, 3365, 5384, 6730, 7403, 10768, 13460, 14806, 26920, 29612, 34591, 37015, 53840, 59224, 69182, 74030, 118448, 138364, 148060, 172955, 276728, 296120, 345910, 380501, 553456, 592240, 691820, 761002, 1383640, 1522004, 1902505, 2767280, 3044008, 3805010, 6088016, 7610020, 15220040, 23279743, 30440080, 46559486, 93118972, 116398715, 186237944, 232797430, 256077173, 372475888, 465594860, 512154346, 931189720, 1024308692, 1280385865, 1862379440, 2048617384, 2560771730, 4097234768, 5121543460, 10243086920, 20486173840]

約数ペア:

[(1, 20486173840), (2, 10243086920), (4, 5121543460), (5, 4097234768), (8, 2560771730), (10, 2048617384), (11, 1862379440), (16, 1280385865), (20, 1024308692), (22, 931189720), (40, 512154346), (44, 465594860), (55, 372475888), (80, 256077173), (88, 232797430), (110, 186237944), (176, 116398715), (220, 93118972), (440, 46559486), (673, 30440080), (880, 23279743), (1346, 15220040), (2692, 7610020), (3365, 6088016), (5384, 3805010), (6730, 3044008), (7403, 2767280), (10768, 1902505), (13460, 1522004), (14806, 1383640), (26920, 761002), (29612, 691820), (34591, 592240), (37015, 553456), (53840, 380501), (59224, 345910), (69182, 296120), (74030, 276728), (118448, 172955), (138364, 148060)]