21074000

素因数分解:

$2^4\times 5^3\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:321

約数の個数: 80

約数和(自身を含む): 52402896

約数和(自身を除く): 31328896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 80, 82, 100, 125, 164, 200, 205, 250, 257, 328, 400, 410, 500, 514, 656, 820, 1000, 1025, 1028, 1285, 1640, 2000, 2050, 2056, 2570, 3280, 4100, 4112, 5125, 5140, 6425, 8200, 10250, 10280, 10537, 12850, 16400, 20500, 20560, 21074, 25700, 32125, 41000, 42148, 51400, 52685, 64250, 82000, 84296, 102800, 105370, 128500, 168592, 210740, 257000, 263425, 421480, 514000, 526850, 842960, 1053700, 1317125, 2107400, 2634250, 4214800, 5268500, 10537000, 21074000]

約数ペア:

[(1, 21074000), (2, 10537000), (4, 5268500), (5, 4214800), (8, 2634250), (10, 2107400), (16, 1317125), (20, 1053700), (25, 842960), (40, 526850), (41, 514000), (50, 421480), (80, 263425), (82, 257000), (100, 210740), (125, 168592), (164, 128500), (200, 105370), (205, 102800), (250, 84296), (257, 82000), (328, 64250), (400, 52685), (410, 51400), (500, 42148), (514, 41000), (656, 32125), (820, 25700), (1000, 21074), (1025, 20560), (1028, 20500), (1285, 16400), (1640, 12850), (2000, 10537), (2050, 10280), (2056, 10250), (2570, 8200), (3280, 6425), (4100, 5140), (4112, 5125)]