21447960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1$

素因数の和:465

約数の個数: 128

約数和(自身を含む): 70848000

約数和(自身を除く): 49400040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 23, 24, 30, 38, 40, 46, 57, 60, 69, 76, 92, 95, 114, 115, 120, 138, 152, 184, 190, 228, 230, 276, 285, 345, 380, 409, 437, 456, 460, 552, 570, 690, 760, 818, 874, 920, 1140, 1227, 1311, 1380, 1636, 1748, 2045, 2185, 2280, 2454, 2622, 2760, 3272, 3496, 4090, 4370, 4908, 5244, 6135, 6555, 7771, 8180, 8740, 9407, 9816, 10488, 12270, 13110, 15542, 16360, 17480, 18814, 23313, 24540, 26220, 28221, 31084, 37628, 38855, 46626, 47035, 49080, 52440, 56442, 62168, 75256, 77710, 93252, 94070, 112884, 116565, 141105, 155420, 178733, 186504, 188140, 225768, 233130, 282210, 310840, 357466, 376280, 466260, 536199, 564420, 714932, 893665, 932520, 1072398, 1128840, 1429864, 1787330, 2144796, 2680995, 3574660, 4289592, 5361990, 7149320, 10723980, 21447960]

約数ペア:

[(1, 21447960), (2, 10723980), (3, 7149320), (4, 5361990), (5, 4289592), (6, 3574660), (8, 2680995), (10, 2144796), (12, 1787330), (15, 1429864), (19, 1128840), (20, 1072398), (23, 932520), (24, 893665), (30, 714932), (38, 564420), (40, 536199), (46, 466260), (57, 376280), (60, 357466), (69, 310840), (76, 282210), (92, 233130), (95, 225768), (114, 188140), (115, 186504), (120, 178733), (138, 155420), (152, 141105), (184, 116565), (190, 112884), (228, 94070), (230, 93252), (276, 77710), (285, 75256), (345, 62168), (380, 56442), (409, 52440), (437, 49080), (456, 47035), (460, 46626), (552, 38855), (570, 37628), (690, 31084), (760, 28221), (818, 26220), (874, 24540), (920, 23313), (1140, 18814), (1227, 17480), (1311, 16360), (1380, 15542), (1636, 13110), (1748, 12270), (2045, 10488), (2185, 9816), (2280, 9407), (2454, 8740), (2622, 8180), (2760, 7771), (3272, 6555), (3496, 6135), (4090, 5244), (4370, 4908)]