31380640

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:254

約数の個数: 96

約数和(自身を含む): 80015040

約数和(自身を除く): 48634400

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 83, 85, 136, 139, 160, 166, 170, 272, 278, 332, 340, 415, 544, 556, 664, 680, 695, 830, 1112, 1328, 1360, 1390, 1411, 1660, 2224, 2363, 2656, 2720, 2780, 2822, 3320, 4448, 4726, 5560, 5644, 6640, 7055, 9452, 11120, 11288, 11537, 11815, 13280, 14110, 18904, 22240, 22576, 23074, 23630, 28220, 37808, 45152, 46148, 47260, 56440, 57685, 75616, 92296, 94520, 112880, 115370, 184592, 189040, 196129, 225760, 230740, 369184, 378080, 392258, 461480, 784516, 922960, 980645, 1569032, 1845920, 1961290, 3138064, 3922580, 6276128, 7845160, 15690320, 31380640]

約数ペア:

[(1, 31380640), (2, 15690320), (4, 7845160), (5, 6276128), (8, 3922580), (10, 3138064), (16, 1961290), (17, 1845920), (20, 1569032), (32, 980645), (34, 922960), (40, 784516), (68, 461480), (80, 392258), (83, 378080), (85, 369184), (136, 230740), (139, 225760), (160, 196129), (166, 189040), (170, 184592), (272, 115370), (278, 112880), (332, 94520), (340, 92296), (415, 75616), (544, 57685), (556, 56440), (664, 47260), (680, 46148), (695, 45152), (830, 37808), (1112, 28220), (1328, 23630), (1360, 23074), (1390, 22576), (1411, 22240), (1660, 18904), (2224, 14110), (2363, 13280), (2656, 11815), (2720, 11537), (2780, 11288), (2822, 11120), (3320, 9452), (4448, 7055), (4726, 6640), (5560, 5644)]