215890640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{385519}}^1$

素因数の和:385539

約数の個数: 40

約数和(自身を含む): 573653760

約数和(自身を除く): 357763120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 385519, 771038, 1542076, 1927595, 2698633, 3084152, 3855190, 5397266, 6168304, 7710380, 10794532, 13493165, 15420760, 21589064, 26986330, 30841520, 43178128, 53972660, 107945320, 215890640]

約数ペア:

[(1, 215890640), (2, 107945320), (4, 53972660), (5, 43178128), (7, 30841520), (8, 26986330), (10, 21589064), (14, 15420760), (16, 13493165), (20, 10794532), (28, 7710380), (35, 6168304), (40, 5397266), (56, 3855190), (70, 3084152), (80, 2698633), (112, 1927595), (140, 1542076), (280, 771038), (560, 385519)]