217645900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^3\times {\mathrm{443}}^1$

素因数の和:508

約数の個数: 72

約数和(自身を含む): 502936560

約数和(自身を除く): 285290660

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 289, 340, 425, 443, 578, 850, 886, 1156, 1445, 1700, 1772, 2215, 2890, 4430, 4913, 5780, 7225, 7531, 8860, 9826, 11075, 14450, 15062, 19652, 22150, 24565, 28900, 30124, 37655, 44300, 49130, 75310, 98260, 122825, 128027, 150620, 188275, 245650, 256054, 376550, 491300, 512108, 640135, 753100, 1280270, 2176459, 2560540, 3200675, 4352918, 6401350, 8705836, 10882295, 12802700, 21764590, 43529180, 54411475, 108822950, 217645900]

約数ペア:

[(1, 217645900), (2, 108822950), (4, 54411475), (5, 43529180), (10, 21764590), (17, 12802700), (20, 10882295), (25, 8705836), (34, 6401350), (50, 4352918), (68, 3200675), (85, 2560540), (100, 2176459), (170, 1280270), (289, 753100), (340, 640135), (425, 512108), (443, 491300), (578, 376550), (850, 256054), (886, 245650), (1156, 188275), (1445, 150620), (1700, 128027), (1772, 122825), (2215, 98260), (2890, 75310), (4430, 49130), (4913, 44300), (5780, 37655), (7225, 30124), (7531, 28900), (8860, 24565), (9826, 22150), (11075, 19652), (14450, 15062)]