21518406

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1$

素因数の和:211

約数の個数: 128

約数和(自身を含む): 61286400

約数和(自身を除く): 39767994

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 29, 39, 42, 54, 58, 63, 78, 87, 91, 117, 126, 151, 174, 182, 189, 203, 234, 261, 273, 302, 351, 377, 378, 406, 453, 522, 546, 609, 702, 754, 783, 819, 906, 1057, 1131, 1218, 1359, 1566, 1638, 1827, 1963, 2114, 2262, 2457, 2639, 2718, 3171, 3393, 3654, 3926, 4077, 4379, 4914, 5278, 5481, 5889, 6342, 6786, 7917, 8154, 8758, 9513, 10179, 10962, 11778, 13137, 13741, 15834, 17667, 19026, 20358, 23751, 26274, 27482, 28539, 30653, 35334, 39411, 41223, 47502, 53001, 56927, 57078, 61306, 71253, 78822, 82446, 91959, 106002, 113854, 118233, 123669, 142506, 170781, 183918, 236466, 247338, 275877, 341562, 371007, 398489, 512343, 551754, 742014, 796978, 827631, 1024686, 1195467, 1537029, 1655262, 2390934, 3074058, 3586401, 7172802, 10759203, 21518406]

約数ペア:

[(1, 21518406), (2, 10759203), (3, 7172802), (6, 3586401), (7, 3074058), (9, 2390934), (13, 1655262), (14, 1537029), (18, 1195467), (21, 1024686), (26, 827631), (27, 796978), (29, 742014), (39, 551754), (42, 512343), (54, 398489), (58, 371007), (63, 341562), (78, 275877), (87, 247338), (91, 236466), (117, 183918), (126, 170781), (151, 142506), (174, 123669), (182, 118233), (189, 113854), (203, 106002), (234, 91959), (261, 82446), (273, 78822), (302, 71253), (351, 61306), (377, 57078), (378, 56927), (406, 53001), (453, 47502), (522, 41223), (546, 39411), (609, 35334), (702, 30653), (754, 28539), (783, 27482), (819, 26274), (906, 23751), (1057, 20358), (1131, 19026), (1218, 17667), (1359, 15834), (1566, 13741), (1638, 13137), (1827, 11778), (1963, 10962), (2114, 10179), (2262, 9513), (2457, 8758), (2639, 8154), (2718, 7917), (3171, 6786), (3393, 6342), (3654, 5889), (3926, 5481), (4077, 5278), (4379, 4914)]