81725920

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16477}}^1$

素因数の和:16523

約数の個数: 48

約数和(自身を含む): 199317888

約数和(自身を除く): 117591968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4960, 16477, 32954, 65908, 82385, 131816, 164770, 263632, 329540, 510787, 527264, 659080, 1021574, 1318160, 2043148, 2553935, 2636320, 4086296, 5107870, 8172592, 10215740, 16345184, 20431480, 40862960, 81725920]

約数ペア:

[(1, 81725920), (2, 40862960), (4, 20431480), (5, 16345184), (8, 10215740), (10, 8172592), (16, 5107870), (20, 4086296), (31, 2636320), (32, 2553935), (40, 2043148), (62, 1318160), (80, 1021574), (124, 659080), (155, 527264), (160, 510787), (248, 329540), (310, 263632), (496, 164770), (620, 131816), (992, 82385), (1240, 65908), (2480, 32954), (4960, 16477)]