21137065840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{212561}}^1$

素因数の和:212698

約数の個数: 80

約数和(自身を含む): 54085975776

約数和(自身を除く): 32948909936

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 113, 176, 220, 226, 440, 452, 565, 880, 904, 1130, 1243, 1808, 2260, 2486, 4520, 4972, 6215, 9040, 9944, 12430, 19888, 24860, 49720, 99440, 212561, 425122, 850244, 1062805, 1700488, 2125610, 2338171, 3400976, 4251220, 4676342, 8502440, 9352684, 11690855, 17004880, 18705368, 23381710, 24019393, 37410736, 46763420, 48038786, 93526840, 96077572, 120096965, 187053680, 192155144, 240193930, 264213323, 384310288, 480387860, 528426646, 960775720, 1056853292, 1321066615, 1921551440, 2113706584, 2642133230, 4227413168, 5284266460, 10568532920, 21137065840]

約数ペア:

[(1, 21137065840), (2, 10568532920), (4, 5284266460), (5, 4227413168), (8, 2642133230), (10, 2113706584), (11, 1921551440), (16, 1321066615), (20, 1056853292), (22, 960775720), (40, 528426646), (44, 480387860), (55, 384310288), (80, 264213323), (88, 240193930), (110, 192155144), (113, 187053680), (176, 120096965), (220, 96077572), (226, 93526840), (440, 48038786), (452, 46763420), (565, 37410736), (880, 24019393), (904, 23381710), (1130, 18705368), (1243, 17004880), (1808, 11690855), (2260, 9352684), (2486, 8502440), (4520, 4676342), (4972, 4251220), (6215, 3400976), (9040, 2338171), (9944, 2125610), (12430, 1700488), (19888, 1062805), (24860, 850244), (49720, 425122), (99440, 212561)]