21436220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2843}}^1$

素因数の和:2894

約数の個数: 48

約数和(自身を含む): 50168160

約数和(自身を除く): 28731940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 2843, 3770, 5686, 7540, 11372, 14215, 28430, 36959, 56860, 73918, 82447, 147836, 164894, 184795, 329788, 369590, 412235, 739180, 824470, 1071811, 1648940, 2143622, 4287244, 5359055, 10718110, 21436220]

約数ペア:

[(1, 21436220), (2, 10718110), (4, 5359055), (5, 4287244), (10, 2143622), (13, 1648940), (20, 1071811), (26, 824470), (29, 739180), (52, 412235), (58, 369590), (65, 329788), (116, 184795), (130, 164894), (145, 147836), (260, 82447), (290, 73918), (377, 56860), (580, 36959), (754, 28430), (1508, 14215), (1885, 11372), (2843, 7540), (3770, 5686)]