18986720

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2239}}^1$

素因数の和:2307

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 26736160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2239, 4240, 4478, 8480, 8956, 11195, 17912, 22390, 35824, 44780, 71648, 89560, 118667, 179120, 237334, 358240, 474668, 593335, 949336, 1186670, 1898672, 2373340, 3797344, 4746680, 9493360, 18986720]

約数ペア:

[(1, 18986720), (2, 9493360), (4, 4746680), (5, 3797344), (8, 2373340), (10, 1898672), (16, 1186670), (20, 949336), (32, 593335), (40, 474668), (53, 358240), (80, 237334), (106, 179120), (160, 118667), (212, 89560), (265, 71648), (424, 44780), (530, 35824), (848, 22390), (1060, 17912), (1696, 11195), (2120, 8956), (2239, 8480), (4240, 4478)]