131440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:97

約数の個数: 40

約数和(自身を含む): 321408

約数和(自身を除く): 189968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 53, 62, 80, 106, 124, 155, 212, 248, 265, 310, 424, 496, 530, 620, 848, 1060, 1240, 1643, 2120, 2480, 3286, 4240, 6572, 8215, 13144, 16430, 26288, 32860, 65720, 131440]

約数ペア:

[(1, 131440), (2, 65720), (4, 32860), (5, 26288), (8, 16430), (10, 13144), (16, 8215), (20, 6572), (31, 4240), (40, 3286), (53, 2480), (62, 2120), (80, 1643), (106, 1240), (124, 1060), (155, 848), (212, 620), (248, 530), (265, 496), (310, 424)]