21295884

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:211

約数の個数: 96

約数和(自身を含む): 56770560

約数和(自身を除く): 35474676

約数列:

[1, 2, 3, 4, 6, 12, 19, 23, 31, 38, 46, 57, 62, 69, 76, 92, 93, 114, 124, 131, 138, 186, 228, 262, 276, 372, 393, 437, 524, 589, 713, 786, 874, 1178, 1311, 1426, 1572, 1748, 1767, 2139, 2356, 2489, 2622, 2852, 3013, 3534, 4061, 4278, 4978, 5244, 6026, 7068, 7467, 8122, 8556, 9039, 9956, 12052, 12183, 13547, 14934, 16244, 18078, 24366, 27094, 29868, 36156, 40641, 48732, 54188, 57247, 77159, 81282, 93403, 114494, 154318, 162564, 171741, 186806, 228988, 231477, 280209, 308636, 343482, 373612, 462954, 560418, 686964, 925908, 1120836, 1774657, 3549314, 5323971, 7098628, 10647942, 21295884]

約数ペア:

[(1, 21295884), (2, 10647942), (3, 7098628), (4, 5323971), (6, 3549314), (12, 1774657), (19, 1120836), (23, 925908), (31, 686964), (38, 560418), (46, 462954), (57, 373612), (62, 343482), (69, 308636), (76, 280209), (92, 231477), (93, 228988), (114, 186806), (124, 171741), (131, 162564), (138, 154318), (186, 114494), (228, 93403), (262, 81282), (276, 77159), (372, 57247), (393, 54188), (437, 48732), (524, 40641), (589, 36156), (713, 29868), (786, 27094), (874, 24366), (1178, 18078), (1311, 16244), (1426, 14934), (1572, 13547), (1748, 12183), (1767, 12052), (2139, 9956), (2356, 9039), (2489, 8556), (2622, 8122), (2852, 7467), (3013, 7068), (3534, 6026), (4061, 5244), (4278, 4978)]