21417344

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:299

約数の個数: 64

約数和(自身を含む): 46924080

約数和(自身を除く): 25506736

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 61, 64, 104, 122, 128, 208, 211, 244, 416, 422, 488, 793, 832, 844, 976, 1586, 1664, 1688, 1952, 2743, 3172, 3376, 3904, 5486, 6344, 6752, 7808, 10972, 12688, 12871, 13504, 21944, 25376, 25742, 27008, 43888, 50752, 51484, 87776, 101504, 102968, 167323, 175552, 205936, 334646, 351104, 411872, 669292, 823744, 1338584, 1647488, 2677168, 5354336, 10708672, 21417344]

約数ペア:

[(1, 21417344), (2, 10708672), (4, 5354336), (8, 2677168), (13, 1647488), (16, 1338584), (26, 823744), (32, 669292), (52, 411872), (61, 351104), (64, 334646), (104, 205936), (122, 175552), (128, 167323), (208, 102968), (211, 101504), (244, 87776), (416, 51484), (422, 50752), (488, 43888), (793, 27008), (832, 25742), (844, 25376), (976, 21944), (1586, 13504), (1664, 12871), (1688, 12688), (1952, 10972), (2743, 7808), (3172, 6752), (3376, 6344), (3904, 5486)]