220178920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{229}}^1$

素因数の和:339

約数の個数: 96

約数和(自身を含む): 548591400

約数和(自身を除く): 328412480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 229, 260, 344, 430, 458, 520, 559, 860, 916, 1118, 1145, 1720, 1832, 1849, 2236, 2290, 2795, 2977, 3698, 4472, 4580, 5590, 5954, 7396, 9160, 9245, 9847, 11180, 11908, 14792, 14885, 18490, 19694, 22360, 23816, 24037, 29770, 36980, 39388, 48074, 49235, 59540, 73960, 78776, 96148, 98470, 119080, 120185, 128011, 192296, 196940, 240370, 256022, 393880, 423421, 480740, 512044, 640055, 846842, 961480, 1024088, 1280110, 1693684, 2117105, 2560220, 3387368, 4234210, 5120440, 5504473, 8468420, 11008946, 16936840, 22017892, 27522365, 44035784, 55044730, 110089460, 220178920]

約数ペア:

[(1, 220178920), (2, 110089460), (4, 55044730), (5, 44035784), (8, 27522365), (10, 22017892), (13, 16936840), (20, 11008946), (26, 8468420), (40, 5504473), (43, 5120440), (52, 4234210), (65, 3387368), (86, 2560220), (104, 2117105), (130, 1693684), (172, 1280110), (215, 1024088), (229, 961480), (260, 846842), (344, 640055), (430, 512044), (458, 480740), (520, 423421), (559, 393880), (860, 256022), (916, 240370), (1118, 196940), (1145, 192296), (1720, 128011), (1832, 120185), (1849, 119080), (2236, 98470), (2290, 96148), (2795, 78776), (2977, 73960), (3698, 59540), (4472, 49235), (4580, 48074), (5590, 39388), (5954, 36980), (7396, 29770), (9160, 24037), (9245, 23816), (9847, 22360), (11180, 19694), (11908, 18490), (14792, 14885)]