254218880

素因数分解:

$2^7\times 5^1\times {\mathrm{397217}}^1$

素因数の和:397236

約数の個数: 32

約数和(自身を含む): 607743540

約数和(自身を除く): 353524660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 397217, 794434, 1588868, 1986085, 3177736, 3972170, 6355472, 7944340, 12710944, 15888680, 25421888, 31777360, 50843776, 63554720, 127109440, 254218880]

約数ペア:

[(1, 254218880), (2, 127109440), (4, 63554720), (5, 50843776), (8, 31777360), (10, 25421888), (16, 15888680), (20, 12710944), (32, 7944340), (40, 6355472), (64, 3972170), (80, 3177736), (128, 1986085), (160, 1588868), (320, 794434), (640, 397217)]