21493836

素因数分解:

$2^2\times 3^{10}\times 7^1\times {\mathrm{13}}^1$

素因数の和:54

約数の個数: 132

約数和(自身を含む): 69441232

約数和(自身を除く): 47947396

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 27, 28, 36, 39, 42, 52, 54, 63, 78, 81, 84, 91, 108, 117, 126, 156, 162, 182, 189, 234, 243, 252, 273, 324, 351, 364, 378, 468, 486, 546, 567, 702, 729, 756, 819, 972, 1053, 1092, 1134, 1404, 1458, 1638, 1701, 2106, 2187, 2268, 2457, 2916, 3159, 3276, 3402, 4212, 4374, 4914, 5103, 6318, 6561, 6804, 7371, 8748, 9477, 9828, 10206, 12636, 13122, 14742, 15309, 18954, 19683, 20412, 22113, 26244, 28431, 29484, 30618, 37908, 39366, 44226, 45927, 56862, 59049, 61236, 66339, 78732, 85293, 88452, 91854, 113724, 118098, 132678, 137781, 170586, 183708, 199017, 236196, 255879, 265356, 275562, 341172, 398034, 413343, 511758, 551124, 597051, 767637, 796068, 826686, 1023516, 1194102, 1535274, 1653372, 1791153, 2388204, 3070548, 3582306, 5373459, 7164612, 10746918, 21493836]

約数ペア:

[(1, 21493836), (2, 10746918), (3, 7164612), (4, 5373459), (6, 3582306), (7, 3070548), (9, 2388204), (12, 1791153), (13, 1653372), (14, 1535274), (18, 1194102), (21, 1023516), (26, 826686), (27, 796068), (28, 767637), (36, 597051), (39, 551124), (42, 511758), (52, 413343), (54, 398034), (63, 341172), (78, 275562), (81, 265356), (84, 255879), (91, 236196), (108, 199017), (117, 183708), (126, 170586), (156, 137781), (162, 132678), (182, 118098), (189, 113724), (234, 91854), (243, 88452), (252, 85293), (273, 78732), (324, 66339), (351, 61236), (364, 59049), (378, 56862), (468, 45927), (486, 44226), (546, 39366), (567, 37908), (702, 30618), (729, 29484), (756, 28431), (819, 26244), (972, 22113), (1053, 20412), (1092, 19683), (1134, 18954), (1404, 15309), (1458, 14742), (1638, 13122), (1701, 12636), (2106, 10206), (2187, 9828), (2268, 9477), (2457, 8748), (2916, 7371), (3159, 6804), (3276, 6561), (3402, 6318), (4212, 5103), (4374, 4914)]