221961480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{541}}^1$

素因数の和:831

約数の個数: 128

約数和(自身を含む): 721163520

約数和(自身を除く): 499202040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 263, 312, 390, 520, 526, 541, 780, 789, 1052, 1082, 1315, 1560, 1578, 1623, 2104, 2164, 2630, 2705, 3156, 3246, 3419, 3945, 4328, 5260, 5410, 6312, 6492, 6838, 7033, 7890, 8115, 10257, 10520, 10820, 12984, 13676, 14066, 15780, 16230, 17095, 20514, 21099, 21640, 27352, 28132, 31560, 32460, 34190, 35165, 41028, 42198, 51285, 56264, 64920, 68380, 70330, 82056, 84396, 102570, 105495, 136760, 140660, 142283, 168792, 205140, 210990, 281320, 284566, 410280, 421980, 426849, 569132, 711415, 843960, 853698, 1138264, 1422830, 1707396, 1849679, 2134245, 2845660, 3414792, 3699358, 4268490, 5549037, 5691320, 7398716, 8536980, 9248395, 11098074, 14797432, 17073960, 18496790, 22196148, 27745185, 36993580, 44392296, 55490370, 73987160, 110980740, 221961480]

約数ペア:

[(1, 221961480), (2, 110980740), (3, 73987160), (4, 55490370), (5, 44392296), (6, 36993580), (8, 27745185), (10, 22196148), (12, 18496790), (13, 17073960), (15, 14797432), (20, 11098074), (24, 9248395), (26, 8536980), (30, 7398716), (39, 5691320), (40, 5549037), (52, 4268490), (60, 3699358), (65, 3414792), (78, 2845660), (104, 2134245), (120, 1849679), (130, 1707396), (156, 1422830), (195, 1138264), (260, 853698), (263, 843960), (312, 711415), (390, 569132), (520, 426849), (526, 421980), (541, 410280), (780, 284566), (789, 281320), (1052, 210990), (1082, 205140), (1315, 168792), (1560, 142283), (1578, 140660), (1623, 136760), (2104, 105495), (2164, 102570), (2630, 84396), (2705, 82056), (3156, 70330), (3246, 68380), (3419, 64920), (3945, 56264), (4328, 51285), (5260, 42198), (5410, 41028), (6312, 35165), (6492, 34190), (6838, 32460), (7033, 31560), (7890, 28132), (8115, 27352), (10257, 21640), (10520, 21099), (10820, 20514), (12984, 17095), (13676, 16230), (14066, 15780)]