320707000

素因数分解:

$2^3\times 5^3\times {\mathrm{71}}^1\times {\mathrm{4517}}^1$

素因数の和:4609

約数の個数: 64

約数和(自身を含む): 761192640

約数和(自身を除く): 440485640

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 125, 142, 200, 250, 284, 355, 500, 568, 710, 1000, 1420, 1775, 2840, 3550, 4517, 7100, 8875, 9034, 14200, 17750, 18068, 22585, 35500, 36136, 45170, 71000, 90340, 112925, 180680, 225850, 320707, 451700, 564625, 641414, 903400, 1129250, 1282828, 1603535, 2258500, 2565656, 3207070, 4517000, 6414140, 8017675, 12828280, 16035350, 32070700, 40088375, 64141400, 80176750, 160353500, 320707000]

約数ペア:

[(1, 320707000), (2, 160353500), (4, 80176750), (5, 64141400), (8, 40088375), (10, 32070700), (20, 16035350), (25, 12828280), (40, 8017675), (50, 6414140), (71, 4517000), (100, 3207070), (125, 2565656), (142, 2258500), (200, 1603535), (250, 1282828), (284, 1129250), (355, 903400), (500, 641414), (568, 564625), (710, 451700), (1000, 320707), (1420, 225850), (1775, 180680), (2840, 112925), (3550, 90340), (4517, 71000), (7100, 45170), (8875, 36136), (9034, 35500), (14200, 22585), (17750, 18068)]