21889710

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1$

素因数の和:303

約数の個数: 128

約数和(自身を含む): 65318400

約数和(自身を除く): 43428690

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 19, 27, 30, 34, 38, 45, 51, 54, 57, 85, 90, 95, 102, 114, 135, 153, 170, 171, 190, 251, 255, 270, 285, 306, 323, 342, 459, 502, 510, 513, 570, 646, 753, 765, 855, 918, 969, 1026, 1255, 1506, 1530, 1615, 1710, 1938, 2259, 2295, 2510, 2565, 2907, 3230, 3765, 4267, 4518, 4590, 4769, 4845, 5130, 5814, 6777, 7530, 8534, 8721, 9538, 9690, 11295, 12801, 13554, 14307, 14535, 17442, 21335, 22590, 23845, 25602, 28614, 29070, 33885, 38403, 42670, 42921, 43605, 47690, 64005, 67770, 71535, 76806, 81073, 85842, 87210, 115209, 128010, 128763, 143070, 162146, 192015, 214605, 230418, 243219, 257526, 384030, 405365, 429210, 486438, 576045, 643815, 729657, 810730, 1152090, 1216095, 1287630, 1459314, 2188971, 2432190, 3648285, 4377942, 7296570, 10944855, 21889710]

約数ペア:

[(1, 21889710), (2, 10944855), (3, 7296570), (5, 4377942), (6, 3648285), (9, 2432190), (10, 2188971), (15, 1459314), (17, 1287630), (18, 1216095), (19, 1152090), (27, 810730), (30, 729657), (34, 643815), (38, 576045), (45, 486438), (51, 429210), (54, 405365), (57, 384030), (85, 257526), (90, 243219), (95, 230418), (102, 214605), (114, 192015), (135, 162146), (153, 143070), (170, 128763), (171, 128010), (190, 115209), (251, 87210), (255, 85842), (270, 81073), (285, 76806), (306, 71535), (323, 67770), (342, 64005), (459, 47690), (502, 43605), (510, 42921), (513, 42670), (570, 38403), (646, 33885), (753, 29070), (765, 28614), (855, 25602), (918, 23845), (969, 22590), (1026, 21335), (1255, 17442), (1506, 14535), (1530, 14307), (1615, 13554), (1710, 12801), (1938, 11295), (2259, 9690), (2295, 9538), (2510, 8721), (2565, 8534), (2907, 7530), (3230, 6777), (3765, 5814), (4267, 5130), (4518, 4845), (4590, 4769)]