20243440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{977}}^1$

素因数の和:1034

約数の個数: 80

約数和(自身を含む): 55300032

約数和(自身を除く): 35056592

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 56, 70, 74, 80, 112, 140, 148, 185, 259, 280, 296, 370, 518, 560, 592, 740, 977, 1036, 1295, 1480, 1954, 2072, 2590, 2960, 3908, 4144, 4885, 5180, 6839, 7816, 9770, 10360, 13678, 15632, 19540, 20720, 27356, 34195, 36149, 39080, 54712, 68390, 72298, 78160, 109424, 136780, 144596, 180745, 253043, 273560, 289192, 361490, 506086, 547120, 578384, 722980, 1012172, 1265215, 1445960, 2024344, 2530430, 2891920, 4048688, 5060860, 10121720, 20243440]

約数ペア:

[(1, 20243440), (2, 10121720), (4, 5060860), (5, 4048688), (7, 2891920), (8, 2530430), (10, 2024344), (14, 1445960), (16, 1265215), (20, 1012172), (28, 722980), (35, 578384), (37, 547120), (40, 506086), (56, 361490), (70, 289192), (74, 273560), (80, 253043), (112, 180745), (140, 144596), (148, 136780), (185, 109424), (259, 78160), (280, 72298), (296, 68390), (370, 54712), (518, 39080), (560, 36149), (592, 34195), (740, 27356), (977, 20720), (1036, 19540), (1295, 15632), (1480, 13678), (1954, 10360), (2072, 9770), (2590, 7816), (2960, 6839), (3908, 5180), (4144, 4885)]