405249920

素因数分解:

$2^7\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1913}}^1$

素因数の和:2263

約数の個数: 64

約数和(自身を含む): 972235440

約数和(自身を除く): 566985520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 331, 640, 662, 1324, 1655, 1913, 2648, 3310, 3826, 5296, 6620, 7652, 9565, 10592, 13240, 15304, 19130, 21184, 26480, 30608, 38260, 42368, 52960, 61216, 76520, 105920, 122432, 153040, 211840, 244864, 306080, 612160, 633203, 1224320, 1266406, 2532812, 3166015, 5065624, 6332030, 10131248, 12664060, 20262496, 25328120, 40524992, 50656240, 81049984, 101312480, 202624960, 405249920]

約数ペア:

[(1, 405249920), (2, 202624960), (4, 101312480), (5, 81049984), (8, 50656240), (10, 40524992), (16, 25328120), (20, 20262496), (32, 12664060), (40, 10131248), (64, 6332030), (80, 5065624), (128, 3166015), (160, 2532812), (320, 1266406), (331, 1224320), (640, 633203), (662, 612160), (1324, 306080), (1655, 244864), (1913, 211840), (2648, 153040), (3310, 122432), (3826, 105920), (5296, 76520), (6620, 61216), (7652, 52960), (9565, 42368), (10592, 38260), (13240, 30608), (15304, 26480), (19130, 21184)]