20422980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1367}}^1$

素因数の和:1465

約数の個数: 72

約数和(自身を含む): 62741952

約数和(自身を除く): 42318972

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 83, 90, 166, 180, 249, 332, 415, 498, 747, 830, 996, 1245, 1367, 1494, 1660, 2490, 2734, 2988, 3735, 4101, 4980, 5468, 6835, 7470, 8202, 12303, 13670, 14940, 16404, 20505, 24606, 27340, 41010, 49212, 61515, 82020, 113461, 123030, 226922, 246060, 340383, 453844, 567305, 680766, 1021149, 1134610, 1361532, 1701915, 2042298, 2269220, 3403830, 4084596, 5105745, 6807660, 10211490, 20422980]

約数ペア:

[(1, 20422980), (2, 10211490), (3, 6807660), (4, 5105745), (5, 4084596), (6, 3403830), (9, 2269220), (10, 2042298), (12, 1701915), (15, 1361532), (18, 1134610), (20, 1021149), (30, 680766), (36, 567305), (45, 453844), (60, 340383), (83, 246060), (90, 226922), (166, 123030), (180, 113461), (249, 82020), (332, 61515), (415, 49212), (498, 41010), (747, 27340), (830, 24606), (996, 20505), (1245, 16404), (1367, 14940), (1494, 13670), (1660, 12303), (2490, 8202), (2734, 7470), (2988, 6835), (3735, 5468), (4101, 4980)]