18978240

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{373}}^1$

素因数の和:446

約数の個数: 112

約数和(自身を含む): 61557408

約数和(自身を除く): 42579168

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 53, 60, 64, 80, 96, 106, 120, 159, 160, 192, 212, 240, 265, 318, 320, 373, 424, 480, 530, 636, 746, 795, 848, 960, 1060, 1119, 1272, 1492, 1590, 1696, 1865, 2120, 2238, 2544, 2984, 3180, 3392, 3730, 4240, 4476, 5088, 5595, 5968, 6360, 7460, 8480, 8952, 10176, 11190, 11936, 12720, 14920, 16960, 17904, 19769, 22380, 23872, 25440, 29840, 35808, 39538, 44760, 50880, 59307, 59680, 71616, 79076, 89520, 98845, 118614, 119360, 158152, 179040, 197690, 237228, 296535, 316304, 358080, 395380, 474456, 593070, 632608, 790760, 948912, 1186140, 1265216, 1581520, 1897824, 2372280, 3163040, 3795648, 4744560, 6326080, 9489120, 18978240]

約数ペア:

[(1, 18978240), (2, 9489120), (3, 6326080), (4, 4744560), (5, 3795648), (6, 3163040), (8, 2372280), (10, 1897824), (12, 1581520), (15, 1265216), (16, 1186140), (20, 948912), (24, 790760), (30, 632608), (32, 593070), (40, 474456), (48, 395380), (53, 358080), (60, 316304), (64, 296535), (80, 237228), (96, 197690), (106, 179040), (120, 158152), (159, 119360), (160, 118614), (192, 98845), (212, 89520), (240, 79076), (265, 71616), (318, 59680), (320, 59307), (373, 50880), (424, 44760), (480, 39538), (530, 35808), (636, 29840), (746, 25440), (795, 23872), (848, 22380), (960, 19769), (1060, 17904), (1119, 16960), (1272, 14920), (1492, 12720), (1590, 11936), (1696, 11190), (1865, 10176), (2120, 8952), (2238, 8480), (2544, 7460), (2984, 6360), (3180, 5968), (3392, 5595), (3730, 5088), (4240, 4476)]