16988355

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{419}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 31842720

約数和(自身を除く): 14854365

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 53, 85, 153, 159, 255, 265, 419, 477, 765, 795, 901, 1257, 2095, 2385, 2703, 3771, 4505, 6285, 7123, 8109, 13515, 18855, 21369, 22207, 35615, 40545, 64107, 66621, 106845, 111035, 199863, 320535, 333105, 377519, 999315, 1132557, 1887595, 3397671, 5662785, 16988355]

約数ペア:

[(1, 16988355), (3, 5662785), (5, 3397671), (9, 1887595), (15, 1132557), (17, 999315), (45, 377519), (51, 333105), (53, 320535), (85, 199863), (153, 111035), (159, 106845), (255, 66621), (265, 64107), (419, 40545), (477, 35615), (765, 22207), (795, 21369), (901, 18855), (1257, 13515), (2095, 8109), (2385, 7123), (2703, 6285), (3771, 4505)]