21883136

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:455

約数の個数: 72

約数和(自身を含む): 50282400

約数和(自身を除く): 28399264

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 32, 38, 44, 64, 76, 88, 128, 152, 176, 209, 256, 304, 352, 409, 418, 608, 704, 818, 836, 1216, 1408, 1636, 1672, 2432, 2816, 3272, 3344, 4499, 4864, 6544, 6688, 7771, 8998, 13088, 13376, 15542, 17996, 26176, 26752, 31084, 35992, 52352, 53504, 62168, 71984, 85481, 104704, 124336, 143968, 170962, 248672, 287936, 341924, 497344, 575872, 683848, 994688, 1151744, 1367696, 1989376, 2735392, 5470784, 10941568, 21883136]

約数ペア:

[(1, 21883136), (2, 10941568), (4, 5470784), (8, 2735392), (11, 1989376), (16, 1367696), (19, 1151744), (22, 994688), (32, 683848), (38, 575872), (44, 497344), (64, 341924), (76, 287936), (88, 248672), (128, 170962), (152, 143968), (176, 124336), (209, 104704), (256, 85481), (304, 71984), (352, 62168), (409, 53504), (418, 52352), (608, 35992), (704, 31084), (818, 26752), (836, 26176), (1216, 17996), (1408, 15542), (1636, 13376), (1672, 13088), (2432, 8998), (2816, 7771), (3272, 6688), (3344, 6544), (4499, 4864)]