19301920

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{997}}^1$

素因数の和:1034

約数の個数: 72

約数和(自身を含む): 50173452

約数和(自身を除く): 30871532

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 997, 1210, 1760, 1936, 1994, 2420, 3872, 3988, 4840, 4985, 7976, 9680, 9970, 10967, 15952, 19360, 19940, 21934, 31904, 39880, 43868, 54835, 79760, 87736, 109670, 120637, 159520, 175472, 219340, 241274, 350944, 438680, 482548, 603185, 877360, 965096, 1206370, 1754720, 1930192, 2412740, 3860384, 4825480, 9650960, 19301920]

約数ペア:

[(1, 19301920), (2, 9650960), (4, 4825480), (5, 3860384), (8, 2412740), (10, 1930192), (11, 1754720), (16, 1206370), (20, 965096), (22, 877360), (32, 603185), (40, 482548), (44, 438680), (55, 350944), (80, 241274), (88, 219340), (110, 175472), (121, 159520), (160, 120637), (176, 109670), (220, 87736), (242, 79760), (352, 54835), (440, 43868), (484, 39880), (605, 31904), (880, 21934), (968, 19940), (997, 19360), (1210, 15952), (1760, 10967), (1936, 9970), (1994, 9680), (2420, 7976), (3872, 4985), (3988, 4840)]