21148140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1427}}^1$

素因数の和:1471

約数の個数: 96

約数和(自身を含む): 67173120

約数和(自身を除く): 46024980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 38, 39, 52, 57, 60, 65, 76, 78, 95, 114, 130, 156, 190, 195, 228, 247, 260, 285, 380, 390, 494, 570, 741, 780, 988, 1140, 1235, 1427, 1482, 2470, 2854, 2964, 3705, 4281, 4940, 5708, 7135, 7410, 8562, 14270, 14820, 17124, 18551, 21405, 27113, 28540, 37102, 42810, 54226, 55653, 74204, 81339, 85620, 92755, 108452, 111306, 135565, 162678, 185510, 222612, 271130, 278265, 325356, 352469, 371020, 406695, 542260, 556530, 704938, 813390, 1057407, 1113060, 1409876, 1626780, 1762345, 2114814, 3524690, 4229628, 5287035, 7049380, 10574070, 21148140]

約数ペア:

[(1, 21148140), (2, 10574070), (3, 7049380), (4, 5287035), (5, 4229628), (6, 3524690), (10, 2114814), (12, 1762345), (13, 1626780), (15, 1409876), (19, 1113060), (20, 1057407), (26, 813390), (30, 704938), (38, 556530), (39, 542260), (52, 406695), (57, 371020), (60, 352469), (65, 325356), (76, 278265), (78, 271130), (95, 222612), (114, 185510), (130, 162678), (156, 135565), (190, 111306), (195, 108452), (228, 92755), (247, 85620), (260, 81339), (285, 74204), (380, 55653), (390, 54226), (494, 42810), (570, 37102), (741, 28540), (780, 27113), (988, 21405), (1140, 18551), (1235, 17124), (1427, 14820), (1482, 14270), (2470, 8562), (2854, 7410), (2964, 7135), (3705, 5708), (4281, 4940)]