21273564

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:187

約数の個数: 96

約数和(自身を含む): 56899584

約数和(自身を除く): 35626020

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 31, 39, 52, 53, 62, 78, 83, 93, 106, 124, 156, 159, 166, 186, 212, 249, 318, 332, 372, 403, 498, 636, 689, 806, 996, 1079, 1209, 1378, 1612, 1643, 2067, 2158, 2418, 2573, 2756, 3237, 3286, 4134, 4316, 4399, 4836, 4929, 5146, 6474, 6572, 7719, 8268, 8798, 9858, 10292, 12948, 13197, 15438, 17596, 19716, 21359, 26394, 30876, 33449, 42718, 52788, 57187, 64077, 66898, 85436, 100347, 114374, 128154, 133796, 136369, 171561, 200694, 228748, 256308, 272738, 343122, 401388, 409107, 545476, 686244, 818214, 1636428, 1772797, 3545594, 5318391, 7091188, 10636782, 21273564]

約数ペア:

[(1, 21273564), (2, 10636782), (3, 7091188), (4, 5318391), (6, 3545594), (12, 1772797), (13, 1636428), (26, 818214), (31, 686244), (39, 545476), (52, 409107), (53, 401388), (62, 343122), (78, 272738), (83, 256308), (93, 228748), (106, 200694), (124, 171561), (156, 136369), (159, 133796), (166, 128154), (186, 114374), (212, 100347), (249, 85436), (318, 66898), (332, 64077), (372, 57187), (403, 52788), (498, 42718), (636, 33449), (689, 30876), (806, 26394), (996, 21359), (1079, 19716), (1209, 17596), (1378, 15438), (1612, 13197), (1643, 12948), (2067, 10292), (2158, 9858), (2418, 8798), (2573, 8268), (2756, 7719), (3237, 6572), (3286, 6474), (4134, 5146), (4316, 4929), (4399, 4836)]