21145740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1$

素因数の和:252

約数の個数: 192

約数和(自身を含む): 77414400

約数和(自身を除く): 56268660

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 23, 28, 30, 33, 35, 42, 44, 46, 55, 60, 66, 69, 70, 77, 84, 92, 105, 110, 115, 132, 138, 140, 154, 161, 165, 199, 210, 220, 230, 231, 253, 276, 308, 322, 330, 345, 385, 398, 420, 460, 462, 483, 506, 597, 644, 660, 690, 759, 770, 796, 805, 924, 966, 995, 1012, 1155, 1194, 1265, 1380, 1393, 1518, 1540, 1610, 1771, 1932, 1990, 2189, 2310, 2388, 2415, 2530, 2786, 2985, 3036, 3220, 3542, 3795, 3980, 4179, 4378, 4577, 4620, 4830, 5060, 5313, 5572, 5970, 6567, 6965, 7084, 7590, 8358, 8756, 8855, 9154, 9660, 10626, 10945, 11940, 13134, 13731, 13930, 15180, 15323, 16716, 17710, 18308, 20895, 21252, 21890, 22885, 26268, 26565, 27462, 27860, 30646, 32039, 32835, 35420, 41790, 43780, 45770, 45969, 50347, 53130, 54924, 61292, 64078, 65670, 68655, 76615, 83580, 91540, 91938, 96117, 100694, 106260, 128156, 131340, 137310, 151041, 153230, 160195, 183876, 192234, 201388, 229845, 251735, 274620, 302082, 306460, 320390, 352429, 384468, 459690, 480585, 503470, 604164, 640780, 704858, 755205, 919380, 961170, 1006940, 1057287, 1409716, 1510410, 1762145, 1922340, 2114574, 3020820, 3524290, 4229148, 5286435, 7048580, 10572870, 21145740]

約数ペア:

[(1, 21145740), (2, 10572870), (3, 7048580), (4, 5286435), (5, 4229148), (6, 3524290), (7, 3020820), (10, 2114574), (11, 1922340), (12, 1762145), (14, 1510410), (15, 1409716), (20, 1057287), (21, 1006940), (22, 961170), (23, 919380), (28, 755205), (30, 704858), (33, 640780), (35, 604164), (42, 503470), (44, 480585), (46, 459690), (55, 384468), (60, 352429), (66, 320390), (69, 306460), (70, 302082), (77, 274620), (84, 251735), (92, 229845), (105, 201388), (110, 192234), (115, 183876), (132, 160195), (138, 153230), (140, 151041), (154, 137310), (161, 131340), (165, 128156), (199, 106260), (210, 100694), (220, 96117), (230, 91938), (231, 91540), (253, 83580), (276, 76615), (308, 68655), (322, 65670), (330, 64078), (345, 61292), (385, 54924), (398, 53130), (420, 50347), (460, 45969), (462, 45770), (483, 43780), (506, 41790), (597, 35420), (644, 32835), (660, 32039), (690, 30646), (759, 27860), (770, 27462), (796, 26565), (805, 26268), (924, 22885), (966, 21890), (995, 21252), (1012, 20895), (1155, 18308), (1194, 17710), (1265, 16716), (1380, 15323), (1393, 15180), (1518, 13930), (1540, 13731), (1610, 13134), (1771, 11940), (1932, 10945), (1990, 10626), (2189, 9660), (2310, 9154), (2388, 8855), (2415, 8756), (2530, 8358), (2786, 7590), (2985, 7084), (3036, 6965), (3220, 6567), (3542, 5970), (3795, 5572), (3980, 5313), (4179, 5060), (4378, 4830), (4577, 4620)]