21768448

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:271

約数の個数: 72

約数和(自身を含む): 48532736

約数和(自身を除く): 26764288

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 128, 208, 211, 248, 256, 403, 416, 422, 496, 806, 832, 844, 992, 1612, 1664, 1688, 1984, 2743, 3224, 3328, 3376, 3968, 5486, 6448, 6541, 6752, 7936, 10972, 12896, 13082, 13504, 21944, 25792, 26164, 27008, 43888, 51584, 52328, 54016, 85033, 87776, 103168, 104656, 170066, 175552, 209312, 340132, 351104, 418624, 680264, 702208, 837248, 1360528, 1674496, 2721056, 5442112, 10884224, 21768448]

約数ペア:

[(1, 21768448), (2, 10884224), (4, 5442112), (8, 2721056), (13, 1674496), (16, 1360528), (26, 837248), (31, 702208), (32, 680264), (52, 418624), (62, 351104), (64, 340132), (104, 209312), (124, 175552), (128, 170066), (208, 104656), (211, 103168), (248, 87776), (256, 85033), (403, 54016), (416, 52328), (422, 51584), (496, 43888), (806, 27008), (832, 26164), (844, 25792), (992, 21944), (1612, 13504), (1664, 13082), (1688, 12896), (1984, 10972), (2743, 7936), (3224, 6752), (3328, 6541), (3376, 6448), (3968, 5486)]