18986240

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1$

素因数の和:204

約数の個数: 144

約数和(自身を含む): 56316288

約数和(自身を除く): 37330048

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 163, 182, 208, 224, 256, 260, 280, 320, 326, 364, 416, 448, 455, 520, 560, 640, 652, 728, 815, 832, 896, 910, 1040, 1120, 1141, 1280, 1304, 1456, 1630, 1664, 1792, 1820, 2080, 2119, 2240, 2282, 2608, 2912, 3260, 3328, 3640, 4160, 4238, 4480, 4564, 5216, 5705, 5824, 6520, 7280, 8320, 8476, 8960, 9128, 10432, 10595, 11410, 11648, 13040, 14560, 14833, 16640, 16952, 18256, 20864, 21190, 22820, 23296, 26080, 29120, 29666, 33904, 36512, 41728, 42380, 45640, 52160, 58240, 59332, 67808, 73024, 74165, 84760, 91280, 104320, 116480, 118664, 135616, 146048, 148330, 169520, 182560, 208640, 237328, 271232, 292096, 296660, 339040, 365120, 474656, 542464, 593320, 678080, 730240, 949312, 1186640, 1356160, 1460480, 1898624, 2373280, 2712320, 3797248, 4746560, 9493120, 18986240]

約数ペア:

[(1, 18986240), (2, 9493120), (4, 4746560), (5, 3797248), (7, 2712320), (8, 2373280), (10, 1898624), (13, 1460480), (14, 1356160), (16, 1186640), (20, 949312), (26, 730240), (28, 678080), (32, 593320), (35, 542464), (40, 474656), (52, 365120), (56, 339040), (64, 296660), (65, 292096), (70, 271232), (80, 237328), (91, 208640), (104, 182560), (112, 169520), (128, 148330), (130, 146048), (140, 135616), (160, 118664), (163, 116480), (182, 104320), (208, 91280), (224, 84760), (256, 74165), (260, 73024), (280, 67808), (320, 59332), (326, 58240), (364, 52160), (416, 45640), (448, 42380), (455, 41728), (520, 36512), (560, 33904), (640, 29666), (652, 29120), (728, 26080), (815, 23296), (832, 22820), (896, 21190), (910, 20864), (1040, 18256), (1120, 16952), (1141, 16640), (1280, 14833), (1304, 14560), (1456, 13040), (1630, 11648), (1664, 11410), (1792, 10595), (1820, 10432), (2080, 9128), (2119, 8960), (2240, 8476), (2282, 8320), (2608, 7280), (2912, 6520), (3260, 5824), (3328, 5705), (3640, 5216), (4160, 4564), (4238, 4480)]