20618000

素因数分解:

$2^4\times 5^3\times {\mathrm{13}}^2\times {\mathrm{61}}^1$

素因数の和:110

約数の個数: 120

約数和(自身を含む): 54869256

約数和(自身を除く): 34251256

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 61, 65, 80, 100, 104, 122, 125, 130, 169, 200, 208, 244, 250, 260, 305, 325, 338, 400, 488, 500, 520, 610, 650, 676, 793, 845, 976, 1000, 1040, 1220, 1300, 1352, 1525, 1586, 1625, 1690, 2000, 2440, 2600, 2704, 3050, 3172, 3250, 3380, 3965, 4225, 4880, 5200, 6100, 6344, 6500, 6760, 7625, 7930, 8450, 10309, 12200, 12688, 13000, 13520, 15250, 15860, 16900, 19825, 20618, 21125, 24400, 26000, 30500, 31720, 33800, 39650, 41236, 42250, 51545, 61000, 63440, 67600, 79300, 82472, 84500, 99125, 103090, 122000, 158600, 164944, 169000, 198250, 206180, 257725, 317200, 338000, 396500, 412360, 515450, 793000, 824720, 1030900, 1288625, 1586000, 2061800, 2577250, 4123600, 5154500, 10309000, 20618000]

約数ペア:

[(1, 20618000), (2, 10309000), (4, 5154500), (5, 4123600), (8, 2577250), (10, 2061800), (13, 1586000), (16, 1288625), (20, 1030900), (25, 824720), (26, 793000), (40, 515450), (50, 412360), (52, 396500), (61, 338000), (65, 317200), (80, 257725), (100, 206180), (104, 198250), (122, 169000), (125, 164944), (130, 158600), (169, 122000), (200, 103090), (208, 99125), (244, 84500), (250, 82472), (260, 79300), (305, 67600), (325, 63440), (338, 61000), (400, 51545), (488, 42250), (500, 41236), (520, 39650), (610, 33800), (650, 31720), (676, 30500), (793, 26000), (845, 24400), (976, 21125), (1000, 20618), (1040, 19825), (1220, 16900), (1300, 15860), (1352, 15250), (1525, 13520), (1586, 13000), (1625, 12688), (1690, 12200), (2000, 10309), (2440, 8450), (2600, 7930), (2704, 7625), (3050, 6760), (3172, 6500), (3250, 6344), (3380, 6100), (3965, 5200), (4225, 4880)]