1280531440

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1\times {\mathrm{1753}}^1$

素因数の和:2186

約数の個数: 80

約数和(自身を含む): 3116282688

約数和(自身を除く): 1835751248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 397, 460, 794, 920, 1588, 1753, 1840, 1985, 3176, 3506, 3970, 6352, 7012, 7940, 8765, 9131, 14024, 15880, 17530, 18262, 28048, 31760, 35060, 36524, 40319, 45655, 70120, 73048, 80638, 91310, 140240, 146096, 161276, 182620, 201595, 322552, 365240, 403190, 645104, 695941, 730480, 806380, 1391882, 1612760, 2783764, 3225520, 3479705, 5567528, 6959410, 11135056, 13918820, 16006643, 27837640, 32013286, 55675280, 64026572, 80033215, 128053144, 160066430, 256106288, 320132860, 640265720, 1280531440]

約数ペア:

[(1, 1280531440), (2, 640265720), (4, 320132860), (5, 256106288), (8, 160066430), (10, 128053144), (16, 80033215), (20, 64026572), (23, 55675280), (40, 32013286), (46, 27837640), (80, 16006643), (92, 13918820), (115, 11135056), (184, 6959410), (230, 5567528), (368, 3479705), (397, 3225520), (460, 2783764), (794, 1612760), (920, 1391882), (1588, 806380), (1753, 730480), (1840, 695941), (1985, 645104), (3176, 403190), (3506, 365240), (3970, 322552), (6352, 201595), (7012, 182620), (7940, 161276), (8765, 146096), (9131, 140240), (14024, 91310), (15880, 80638), (17530, 73048), (18262, 70120), (28048, 45655), (31760, 40319), (35060, 36524)]