28272520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:502

約数の個数: 64

約数和(自身を含む): 67392000

約数和(自身を除く): 39119480

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 79, 92, 115, 158, 184, 230, 316, 389, 395, 460, 632, 778, 790, 920, 1556, 1580, 1817, 1945, 3112, 3160, 3634, 3890, 7268, 7780, 8947, 9085, 14536, 15560, 17894, 18170, 30731, 35788, 36340, 44735, 61462, 71576, 72680, 89470, 122924, 153655, 178940, 245848, 307310, 357880, 614620, 706813, 1229240, 1413626, 2827252, 3534065, 5654504, 7068130, 14136260, 28272520]

約数ペア:

[(1, 28272520), (2, 14136260), (4, 7068130), (5, 5654504), (8, 3534065), (10, 2827252), (20, 1413626), (23, 1229240), (40, 706813), (46, 614620), (79, 357880), (92, 307310), (115, 245848), (158, 178940), (184, 153655), (230, 122924), (316, 89470), (389, 72680), (395, 71576), (460, 61462), (632, 44735), (778, 36340), (790, 35788), (920, 30731), (1556, 18170), (1580, 17894), (1817, 15560), (1945, 14536), (3112, 9085), (3160, 8947), (3634, 7780), (3890, 7268)]