21309420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{389}}^1$

素因数の和:495

約数の個数: 96

約数和(自身を含む): 66044160

約数和(自身を除く): 44734740

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 83, 110, 132, 165, 166, 220, 249, 330, 332, 389, 415, 498, 660, 778, 830, 913, 996, 1167, 1245, 1556, 1660, 1826, 1945, 2334, 2490, 2739, 3652, 3890, 4279, 4565, 4668, 4980, 5478, 5835, 7780, 8558, 9130, 10956, 11670, 12837, 13695, 17116, 18260, 21395, 23340, 25674, 27390, 32287, 42790, 51348, 54780, 64185, 64574, 85580, 96861, 128370, 129148, 161435, 193722, 256740, 322870, 355157, 387444, 484305, 645740, 710314, 968610, 1065471, 1420628, 1775785, 1937220, 2130942, 3551570, 4261884, 5327355, 7103140, 10654710, 21309420]

約数ペア:

[(1, 21309420), (2, 10654710), (3, 7103140), (4, 5327355), (5, 4261884), (6, 3551570), (10, 2130942), (11, 1937220), (12, 1775785), (15, 1420628), (20, 1065471), (22, 968610), (30, 710314), (33, 645740), (44, 484305), (55, 387444), (60, 355157), (66, 322870), (83, 256740), (110, 193722), (132, 161435), (165, 129148), (166, 128370), (220, 96861), (249, 85580), (330, 64574), (332, 64185), (389, 54780), (415, 51348), (498, 42790), (660, 32287), (778, 27390), (830, 25674), (913, 23340), (996, 21395), (1167, 18260), (1245, 17116), (1556, 13695), (1660, 12837), (1826, 11670), (1945, 10956), (2334, 9130), (2490, 8558), (2739, 7780), (3652, 5835), (3890, 5478), (4279, 4980), (4565, 4668)]