20805094072

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1\times {\mathrm{727}}^1$

素因数の和:1001

約数の個数: 128

約数和(自身を含む): 46495088640

約数和(自身を除く): 25689994568

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 83, 94, 131, 166, 188, 262, 329, 332, 376, 524, 581, 658, 664, 727, 917, 1048, 1162, 1316, 1454, 1834, 2324, 2632, 2908, 3668, 3901, 4648, 5089, 5816, 6157, 7336, 7802, 10178, 10873, 12314, 15604, 20356, 21746, 24628, 27307, 31208, 34169, 40712, 43099, 43492, 49256, 54614, 60341, 68338, 76111, 86198, 86984, 95237, 109228, 120682, 136676, 152222, 172396, 190474, 218456, 239183, 241364, 273352, 304444, 344792, 380948, 422387, 478366, 482728, 511031, 608888, 666659, 761896, 844774, 956732, 1022062, 1333318, 1689548, 1913464, 2044124, 2666636, 2836027, 3379096, 3577217, 4088248, 4476139, 5333272, 5672054, 7154434, 7904671, 8952278, 11344108, 14308868, 15809342, 17904556, 19852189, 22688216, 28617736, 31332973, 31618684, 35809112, 39704378, 55332697, 62665946, 63237368, 79408756, 110665394, 125331892, 158817512, 221330788, 250663784, 371519537, 442661576, 743039074, 1486078148, 2600636759, 2972156296, 5201273518, 10402547036, 20805094072]

約数ペア:

[(1, 20805094072), (2, 10402547036), (4, 5201273518), (7, 2972156296), (8, 2600636759), (14, 1486078148), (28, 743039074), (47, 442661576), (56, 371519537), (83, 250663784), (94, 221330788), (131, 158817512), (166, 125331892), (188, 110665394), (262, 79408756), (329, 63237368), (332, 62665946), (376, 55332697), (524, 39704378), (581, 35809112), (658, 31618684), (664, 31332973), (727, 28617736), (917, 22688216), (1048, 19852189), (1162, 17904556), (1316, 15809342), (1454, 14308868), (1834, 11344108), (2324, 8952278), (2632, 7904671), (2908, 7154434), (3668, 5672054), (3901, 5333272), (4648, 4476139), (5089, 4088248), (5816, 3577217), (6157, 3379096), (7336, 2836027), (7802, 2666636), (10178, 2044124), (10873, 1913464), (12314, 1689548), (15604, 1333318), (20356, 1022062), (21746, 956732), (24628, 844774), (27307, 761896), (31208, 666659), (34169, 608888), (40712, 511031), (43099, 482728), (43492, 478366), (49256, 422387), (54614, 380948), (60341, 344792), (68338, 304444), (76111, 273352), (86198, 241364), (86984, 239183), (95237, 218456), (109228, 190474), (120682, 172396), (136676, 152222)]