78897889

素因数分解:

$7^3\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:254

約数の個数: 32

約数和(自身を含む): 98035200

約数和(自身を除く): 19137311

約数列:

[1, 7, 23, 49, 73, 137, 161, 343, 511, 959, 1127, 1679, 3151, 3577, 6713, 7889, 10001, 11753, 22057, 25039, 46991, 70007, 82271, 154399, 230023, 490049, 575897, 1080793, 1610161, 3430343, 11271127, 78897889]

約数ペア:

[(1, 78897889), (7, 11271127), (23, 3430343), (49, 1610161), (73, 1080793), (137, 575897), (161, 490049), (343, 230023), (511, 154399), (959, 82271), (1127, 70007), (1679, 46991), (3151, 25039), (3577, 22057), (6713, 11753), (7889, 10001)]