128995720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{2663}}^1$

素因数の和:2854

約数の個数: 64

約数和(自身を含む): 333745920

約数和(自身を除く): 204750200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 173, 280, 346, 692, 865, 1211, 1384, 1730, 2422, 2663, 3460, 4844, 5326, 6055, 6920, 9688, 10652, 12110, 13315, 18641, 21304, 24220, 26630, 37282, 48440, 53260, 74564, 93205, 106520, 149128, 186410, 372820, 460699, 745640, 921398, 1842796, 2303495, 3224893, 3685592, 4606990, 6449786, 9213980, 12899572, 16124465, 18427960, 25799144, 32248930, 64497860, 128995720]

約数ペア:

[(1, 128995720), (2, 64497860), (4, 32248930), (5, 25799144), (7, 18427960), (8, 16124465), (10, 12899572), (14, 9213980), (20, 6449786), (28, 4606990), (35, 3685592), (40, 3224893), (56, 2303495), (70, 1842796), (140, 921398), (173, 745640), (280, 460699), (346, 372820), (692, 186410), (865, 149128), (1211, 106520), (1384, 93205), (1730, 74564), (2422, 53260), (2663, 48440), (3460, 37282), (4844, 26630), (5326, 24220), (6055, 21304), (6920, 18641), (9688, 13315), (10652, 12110)]