21530208

素因数分解:

$2^5\times 3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{199}}^1$

素因数の和:249

約数の個数: 144

約数和(自身を含む): 68947200

約数和(自身を除く): 47416992

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 23, 24, 28, 32, 42, 46, 48, 49, 56, 69, 84, 92, 96, 98, 112, 138, 147, 161, 168, 184, 196, 199, 224, 276, 294, 322, 336, 368, 392, 398, 483, 552, 588, 597, 644, 672, 736, 784, 796, 966, 1104, 1127, 1176, 1194, 1288, 1393, 1568, 1592, 1932, 2208, 2254, 2352, 2388, 2576, 2786, 3184, 3381, 3864, 4179, 4508, 4577, 4704, 4776, 5152, 5572, 6368, 6762, 7728, 8358, 9016, 9154, 9552, 9751, 11144, 13524, 13731, 15456, 16716, 18032, 18308, 19104, 19502, 22288, 27048, 27462, 29253, 32039, 33432, 36064, 36616, 39004, 44576, 54096, 54924, 58506, 64078, 66864, 73232, 78008, 96117, 108192, 109848, 117012, 128156, 133728, 146464, 156016, 192234, 219696, 224273, 234024, 256312, 312032, 384468, 439392, 448546, 468048, 512624, 672819, 768936, 897092, 936096, 1025248, 1345638, 1537872, 1794184, 2691276, 3075744, 3588368, 5382552, 7176736, 10765104, 21530208]

約数ペア:

[(1, 21530208), (2, 10765104), (3, 7176736), (4, 5382552), (6, 3588368), (7, 3075744), (8, 2691276), (12, 1794184), (14, 1537872), (16, 1345638), (21, 1025248), (23, 936096), (24, 897092), (28, 768936), (32, 672819), (42, 512624), (46, 468048), (48, 448546), (49, 439392), (56, 384468), (69, 312032), (84, 256312), (92, 234024), (96, 224273), (98, 219696), (112, 192234), (138, 156016), (147, 146464), (161, 133728), (168, 128156), (184, 117012), (196, 109848), (199, 108192), (224, 96117), (276, 78008), (294, 73232), (322, 66864), (336, 64078), (368, 58506), (392, 54924), (398, 54096), (483, 44576), (552, 39004), (588, 36616), (597, 36064), (644, 33432), (672, 32039), (736, 29253), (784, 27462), (796, 27048), (966, 22288), (1104, 19502), (1127, 19104), (1176, 18308), (1194, 18032), (1288, 16716), (1393, 15456), (1568, 13731), (1592, 13524), (1932, 11144), (2208, 9751), (2254, 9552), (2352, 9154), (2388, 9016), (2576, 8358), (2786, 7728), (3184, 6762), (3381, 6368), (3864, 5572), (4179, 5152), (4508, 4776), (4577, 4704)]