21241088

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{397}}^1$

素因数の和:443

約数の個数: 72

約数和(自身を含む): 48810720

約数和(自身を除く): 27569632

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 32, 38, 44, 64, 76, 88, 128, 152, 176, 209, 256, 304, 352, 397, 418, 608, 704, 794, 836, 1216, 1408, 1588, 1672, 2432, 2816, 3176, 3344, 4367, 4864, 6352, 6688, 7543, 8734, 12704, 13376, 15086, 17468, 25408, 26752, 30172, 34936, 50816, 53504, 60344, 69872, 82973, 101632, 120688, 139744, 165946, 241376, 279488, 331892, 482752, 558976, 663784, 965504, 1117952, 1327568, 1931008, 2655136, 5310272, 10620544, 21241088]

約数ペア:

[(1, 21241088), (2, 10620544), (4, 5310272), (8, 2655136), (11, 1931008), (16, 1327568), (19, 1117952), (22, 965504), (32, 663784), (38, 558976), (44, 482752), (64, 331892), (76, 279488), (88, 241376), (128, 165946), (152, 139744), (176, 120688), (209, 101632), (256, 82973), (304, 69872), (352, 60344), (397, 53504), (418, 50816), (608, 34936), (704, 30172), (794, 26752), (836, 25408), (1216, 17468), (1408, 15086), (1588, 13376), (1672, 12704), (2432, 8734), (2816, 7543), (3176, 6688), (3344, 6352), (4367, 4864)]