20419300

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{977}}^1$

素因数の和:1021

約数の個数: 72

約数和(自身を含む): 50934240

約数和(自身を除く): 30514940

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 50, 55, 76, 95, 100, 110, 190, 209, 220, 275, 380, 418, 475, 550, 836, 950, 977, 1045, 1100, 1900, 1954, 2090, 3908, 4180, 4885, 5225, 9770, 10450, 10747, 18563, 19540, 20900, 21494, 24425, 37126, 42988, 48850, 53735, 74252, 92815, 97700, 107470, 185630, 204193, 214940, 268675, 371260, 408386, 464075, 537350, 816772, 928150, 1020965, 1074700, 1856300, 2041930, 4083860, 5104825, 10209650, 20419300]

約数ペア:

[(1, 20419300), (2, 10209650), (4, 5104825), (5, 4083860), (10, 2041930), (11, 1856300), (19, 1074700), (20, 1020965), (22, 928150), (25, 816772), (38, 537350), (44, 464075), (50, 408386), (55, 371260), (76, 268675), (95, 214940), (100, 204193), (110, 185630), (190, 107470), (209, 97700), (220, 92815), (275, 74252), (380, 53735), (418, 48850), (475, 42988), (550, 37126), (836, 24425), (950, 21494), (977, 20900), (1045, 19540), (1100, 18563), (1900, 10747), (1954, 10450), (2090, 9770), (3908, 5225), (4180, 4885)]