21053824

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{787}}^1$

素因数の和:831

約数の個数: 64

約数和(自身を含む): 48225600

約数和(自身を除く): 27171776

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 32, 38, 44, 64, 76, 88, 128, 152, 176, 209, 304, 352, 418, 608, 704, 787, 836, 1216, 1408, 1574, 1672, 2432, 3148, 3344, 6296, 6688, 8657, 12592, 13376, 14953, 17314, 25184, 26752, 29906, 34628, 50368, 59812, 69256, 100736, 119624, 138512, 164483, 239248, 277024, 328966, 478496, 554048, 657932, 956992, 1108096, 1315864, 1913984, 2631728, 5263456, 10526912, 21053824]

約数ペア:

[(1, 21053824), (2, 10526912), (4, 5263456), (8, 2631728), (11, 1913984), (16, 1315864), (19, 1108096), (22, 956992), (32, 657932), (38, 554048), (44, 478496), (64, 328966), (76, 277024), (88, 239248), (128, 164483), (152, 138512), (176, 119624), (209, 100736), (304, 69256), (352, 59812), (418, 50368), (608, 34628), (704, 29906), (787, 26752), (836, 25184), (1216, 17314), (1408, 14953), (1574, 13376), (1672, 12592), (2432, 8657), (3148, 6688), (3344, 6296)]