28780000

素因数分解:

$2^5\times 5^4\times {\mathrm{1439}}^1$

素因数の和:1469

約数の個数: 60

約数和(自身を含む): 70852320

約数和(自身を除く): 42072320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 1439, 2000, 2500, 2878, 4000, 5000, 5756, 7195, 10000, 11512, 14390, 20000, 23024, 28780, 35975, 46048, 57560, 71950, 115120, 143900, 179875, 230240, 287800, 359750, 575600, 719500, 899375, 1151200, 1439000, 1798750, 2878000, 3597500, 5756000, 7195000, 14390000, 28780000]

約数ペア:

[(1, 28780000), (2, 14390000), (4, 7195000), (5, 5756000), (8, 3597500), (10, 2878000), (16, 1798750), (20, 1439000), (25, 1151200), (32, 899375), (40, 719500), (50, 575600), (80, 359750), (100, 287800), (125, 230240), (160, 179875), (200, 143900), (250, 115120), (400, 71950), (500, 57560), (625, 46048), (800, 35975), (1000, 28780), (1250, 23024), (1439, 20000), (2000, 14390), (2500, 11512), (2878, 10000), (4000, 7195), (5000, 5756)]