20216320

素因数分解:

$2^9\times 5^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:225

約数の個数: 80

約数和(自身を含む): 49717800

約数和(自身を除く): 29501480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 128, 149, 160, 212, 256, 265, 298, 320, 424, 512, 530, 596, 640, 745, 848, 1060, 1192, 1280, 1490, 1696, 2120, 2384, 2560, 2980, 3392, 4240, 4768, 5960, 6784, 7897, 8480, 9536, 11920, 13568, 15794, 16960, 19072, 23840, 27136, 31588, 33920, 38144, 39485, 47680, 63176, 67840, 76288, 78970, 95360, 126352, 135680, 157940, 190720, 252704, 315880, 381440, 505408, 631760, 1010816, 1263520, 2021632, 2527040, 4043264, 5054080, 10108160, 20216320]

約数ペア:

[(1, 20216320), (2, 10108160), (4, 5054080), (5, 4043264), (8, 2527040), (10, 2021632), (16, 1263520), (20, 1010816), (32, 631760), (40, 505408), (53, 381440), (64, 315880), (80, 252704), (106, 190720), (128, 157940), (149, 135680), (160, 126352), (212, 95360), (256, 78970), (265, 76288), (298, 67840), (320, 63176), (424, 47680), (512, 39485), (530, 38144), (596, 33920), (640, 31588), (745, 27136), (848, 23840), (1060, 19072), (1192, 16960), (1280, 15794), (1490, 13568), (1696, 11920), (2120, 9536), (2384, 8480), (2560, 7897), (2980, 6784), (3392, 5960), (4240, 4768)]