639722560

素因数分解:

$2^6\times 5^1\times {\mathrm{149}}^1\times {\mathrm{13417}}^1$

素因数の和:13583

約数の個数: 56

約数和(自身を含む): 1533677400

約数和(自身を除く): 893954840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 149, 160, 298, 320, 596, 745, 1192, 1490, 2384, 2980, 4768, 5960, 9536, 11920, 13417, 23840, 26834, 47680, 53668, 67085, 107336, 134170, 214672, 268340, 429344, 536680, 858688, 1073360, 1999133, 2146720, 3998266, 4293440, 7996532, 9995665, 15993064, 19991330, 31986128, 39982660, 63972256, 79965320, 127944512, 159930640, 319861280, 639722560]

約数ペア:

[(1, 639722560), (2, 319861280), (4, 159930640), (5, 127944512), (8, 79965320), (10, 63972256), (16, 39982660), (20, 31986128), (32, 19991330), (40, 15993064), (64, 9995665), (80, 7996532), (149, 4293440), (160, 3998266), (298, 2146720), (320, 1999133), (596, 1073360), (745, 858688), (1192, 536680), (1490, 429344), (2384, 268340), (2980, 214672), (4768, 134170), (5960, 107336), (9536, 67085), (11920, 53668), (13417, 47680), (23840, 26834)]