21307264

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{409}}^1$

素因数の和:471

約数の個数: 64

約数和(自身を含む): 47674800

約数和(自身を除く): 26367536

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 37, 44, 64, 74, 88, 128, 148, 176, 296, 352, 407, 409, 592, 704, 814, 818, 1184, 1408, 1628, 1636, 2368, 3256, 3272, 4499, 4736, 6512, 6544, 8998, 13024, 13088, 15133, 17996, 26048, 26176, 30266, 35992, 52096, 52352, 60532, 71984, 121064, 143968, 166463, 242128, 287936, 332926, 484256, 575872, 665852, 968512, 1331704, 1937024, 2663408, 5326816, 10653632, 21307264]

約数ペア:

[(1, 21307264), (2, 10653632), (4, 5326816), (8, 2663408), (11, 1937024), (16, 1331704), (22, 968512), (32, 665852), (37, 575872), (44, 484256), (64, 332926), (74, 287936), (88, 242128), (128, 166463), (148, 143968), (176, 121064), (296, 71984), (352, 60532), (407, 52352), (409, 52096), (592, 35992), (704, 30266), (814, 26176), (818, 26048), (1184, 17996), (1408, 15133), (1628, 13088), (1636, 13024), (2368, 8998), (3256, 6544), (3272, 6512), (4499, 4736)]