28940520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{263}}^1$

素因数の和:415

約数の個数: 128

約数和(自身を含む): 100362240

約数和(自身を除く): 71421720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 131, 140, 168, 210, 262, 263, 280, 393, 420, 524, 526, 655, 786, 789, 840, 917, 1048, 1052, 1310, 1315, 1572, 1578, 1834, 1841, 1965, 2104, 2620, 2630, 2751, 3144, 3156, 3668, 3682, 3930, 3945, 4585, 5240, 5260, 5502, 5523, 6312, 7336, 7364, 7860, 7890, 9170, 9205, 10520, 11004, 11046, 13755, 14728, 15720, 15780, 18340, 18410, 22008, 22092, 27510, 27615, 31560, 34453, 36680, 36820, 44184, 55020, 55230, 68906, 73640, 103359, 110040, 110460, 137812, 172265, 206718, 220920, 241171, 275624, 344530, 413436, 482342, 516795, 689060, 723513, 826872, 964684, 1033590, 1205855, 1378120, 1447026, 1929368, 2067180, 2411710, 2894052, 3617565, 4134360, 4823420, 5788104, 7235130, 9646840, 14470260, 28940520]

約数ペア:

[(1, 28940520), (2, 14470260), (3, 9646840), (4, 7235130), (5, 5788104), (6, 4823420), (7, 4134360), (8, 3617565), (10, 2894052), (12, 2411710), (14, 2067180), (15, 1929368), (20, 1447026), (21, 1378120), (24, 1205855), (28, 1033590), (30, 964684), (35, 826872), (40, 723513), (42, 689060), (56, 516795), (60, 482342), (70, 413436), (84, 344530), (105, 275624), (120, 241171), (131, 220920), (140, 206718), (168, 172265), (210, 137812), (262, 110460), (263, 110040), (280, 103359), (393, 73640), (420, 68906), (524, 55230), (526, 55020), (655, 44184), (786, 36820), (789, 36680), (840, 34453), (917, 31560), (1048, 27615), (1052, 27510), (1310, 22092), (1315, 22008), (1572, 18410), (1578, 18340), (1834, 15780), (1841, 15720), (1965, 14728), (2104, 13755), (2620, 11046), (2630, 11004), (2751, 10520), (3144, 9205), (3156, 9170), (3668, 7890), (3682, 7860), (3930, 7364), (3945, 7336), (4585, 6312), (5240, 5523), (5260, 5502)]