213407715

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{2591}}^1$

素因数の和:2652

約数の個数: 48

約数和(自身を含む): 381957120

約数和(自身を除く): 168549405

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 289, 323, 867, 969, 1445, 1615, 2591, 4335, 4845, 5491, 7773, 12955, 16473, 27455, 38865, 44047, 49229, 82365, 132141, 147687, 220235, 246145, 660705, 738435, 748799, 836893, 2246397, 2510679, 3743995, 4184465, 11231985, 12553395, 14227181, 42681543, 71135905, 213407715]

約数ペア:

[(1, 213407715), (3, 71135905), (5, 42681543), (15, 14227181), (17, 12553395), (19, 11231985), (51, 4184465), (57, 3743995), (85, 2510679), (95, 2246397), (255, 836893), (285, 748799), (289, 738435), (323, 660705), (867, 246145), (969, 220235), (1445, 147687), (1615, 132141), (2591, 82365), (4335, 49229), (4845, 44047), (5491, 38865), (7773, 27455), (12955, 16473)]