991347876

素因数分解:

$2^2\times 3^3\times {\mathrm{19}}^2\times {\mathrm{47}}^1\times {\mathrm{541}}^1$

素因数の和:639

約数の個数: 144

約数和(自身を含む): 2775386880

約数和(自身を除く): 1784039004

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 27, 36, 38, 47, 54, 57, 76, 94, 108, 114, 141, 171, 188, 228, 282, 342, 361, 423, 513, 541, 564, 684, 722, 846, 893, 1026, 1082, 1083, 1269, 1444, 1623, 1692, 1786, 2052, 2164, 2166, 2538, 2679, 3246, 3249, 3572, 4332, 4869, 5076, 5358, 6492, 6498, 8037, 9738, 9747, 10279, 10716, 12996, 14607, 16074, 16967, 19476, 19494, 20558, 24111, 25427, 29214, 30837, 32148, 33934, 38988, 41116, 48222, 50854, 50901, 58428, 61674, 67868, 76281, 92511, 96444, 101708, 101802, 123348, 152562, 152703, 185022, 195301, 203604, 228843, 277533, 305124, 305406, 370044, 390602, 457686, 458109, 483113, 555066, 585903, 610812, 686529, 781204, 915372, 916218, 966226, 1110132, 1171806, 1373058, 1449339, 1757709, 1832436, 1932452, 2343612, 2746116, 2898678, 3515418, 4348017, 5273127, 5797356, 7030836, 8696034, 9179147, 10546254, 13044051, 17392068, 18358294, 21092508, 26088102, 27537441, 36716588, 52176204, 55074882, 82612323, 110149764, 165224646, 247836969, 330449292, 495673938, 991347876]

約数ペア:

[(1, 991347876), (2, 495673938), (3, 330449292), (4, 247836969), (6, 165224646), (9, 110149764), (12, 82612323), (18, 55074882), (19, 52176204), (27, 36716588), (36, 27537441), (38, 26088102), (47, 21092508), (54, 18358294), (57, 17392068), (76, 13044051), (94, 10546254), (108, 9179147), (114, 8696034), (141, 7030836), (171, 5797356), (188, 5273127), (228, 4348017), (282, 3515418), (342, 2898678), (361, 2746116), (423, 2343612), (513, 1932452), (541, 1832436), (564, 1757709), (684, 1449339), (722, 1373058), (846, 1171806), (893, 1110132), (1026, 966226), (1082, 916218), (1083, 915372), (1269, 781204), (1444, 686529), (1623, 610812), (1692, 585903), (1786, 555066), (2052, 483113), (2164, 458109), (2166, 457686), (2538, 390602), (2679, 370044), (3246, 305406), (3249, 305124), (3572, 277533), (4332, 228843), (4869, 203604), (5076, 195301), (5358, 185022), (6492, 152703), (6498, 152562), (8037, 123348), (9738, 101802), (9747, 101708), (10279, 96444), (10716, 92511), (12996, 76281), (14607, 67868), (16074, 61674), (16967, 58428), (19476, 50901), (19494, 50854), (20558, 48222), (24111, 41116), (25427, 38988), (29214, 33934), (30837, 32148)]