28728320

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:237

約数の個数: 88

約数和(自身を含む): 71530368

約数和(自身を除く): 42802048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 181, 248, 256, 310, 320, 362, 496, 512, 620, 640, 724, 905, 992, 1024, 1240, 1280, 1448, 1810, 1984, 2480, 2560, 2896, 3620, 3968, 4960, 5120, 5611, 5792, 7240, 7936, 9920, 11222, 11584, 14480, 15872, 19840, 22444, 23168, 28055, 28960, 31744, 39680, 44888, 46336, 56110, 57920, 79360, 89776, 92672, 112220, 115840, 158720, 179552, 185344, 224440, 231680, 359104, 448880, 463360, 718208, 897760, 926720, 1436416, 1795520, 2872832, 3591040, 5745664, 7182080, 14364160, 28728320]

約数ペア:

[(1, 28728320), (2, 14364160), (4, 7182080), (5, 5745664), (8, 3591040), (10, 2872832), (16, 1795520), (20, 1436416), (31, 926720), (32, 897760), (40, 718208), (62, 463360), (64, 448880), (80, 359104), (124, 231680), (128, 224440), (155, 185344), (160, 179552), (181, 158720), (248, 115840), (256, 112220), (310, 92672), (320, 89776), (362, 79360), (496, 57920), (512, 56110), (620, 46336), (640, 44888), (724, 39680), (905, 31744), (992, 28960), (1024, 28055), (1240, 23168), (1280, 22444), (1448, 19840), (1810, 15872), (1984, 14480), (2480, 11584), (2560, 11222), (2896, 9920), (3620, 7936), (3968, 7240), (4960, 5792), (5120, 5611)]