218212425

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{641}}^1$

素因数の和:763

約数の個数: 72

約数和(自身を含む): 419136120

約数和(自身を除く): 200923695

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 89, 153, 225, 255, 267, 425, 445, 641, 765, 801, 1275, 1335, 1513, 1923, 2225, 3205, 3825, 4005, 4539, 5769, 6675, 7565, 9615, 10897, 13617, 16025, 20025, 22695, 28845, 32691, 37825, 48075, 54485, 57049, 68085, 98073, 113475, 144225, 163455, 171147, 272425, 285245, 340425, 490365, 513441, 817275, 855735, 969833, 1426225, 2451825, 2567205, 2909499, 4278675, 4849165, 8728497, 12836025, 14547495, 24245825, 43642485, 72737475, 218212425]

約数ペア:

[(1, 218212425), (3, 72737475), (5, 43642485), (9, 24245825), (15, 14547495), (17, 12836025), (25, 8728497), (45, 4849165), (51, 4278675), (75, 2909499), (85, 2567205), (89, 2451825), (153, 1426225), (225, 969833), (255, 855735), (267, 817275), (425, 513441), (445, 490365), (641, 340425), (765, 285245), (801, 272425), (1275, 171147), (1335, 163455), (1513, 144225), (1923, 113475), (2225, 98073), (3205, 68085), (3825, 57049), (4005, 54485), (4539, 48075), (5769, 37825), (6675, 32691), (7565, 28845), (9615, 22695), (10897, 20025), (13617, 16025)]