21651584

素因数分解:

$2^7\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:181

約数の個数: 64

約数和(自身を含む): 45532800

約数和(自身を除く): 23881216

約数列:

[1, 2, 4, 8, 16, 32, 47, 59, 61, 64, 94, 118, 122, 128, 188, 236, 244, 376, 472, 488, 752, 944, 976, 1504, 1888, 1952, 2773, 2867, 3008, 3599, 3776, 3904, 5546, 5734, 6016, 7198, 7552, 7808, 11092, 11468, 14396, 22184, 22936, 28792, 44368, 45872, 57584, 88736, 91744, 115168, 169153, 177472, 183488, 230336, 338306, 354944, 366976, 460672, 676612, 1353224, 2706448, 5412896, 10825792, 21651584]

約数ペア:

[(1, 21651584), (2, 10825792), (4, 5412896), (8, 2706448), (16, 1353224), (32, 676612), (47, 460672), (59, 366976), (61, 354944), (64, 338306), (94, 230336), (118, 183488), (122, 177472), (128, 169153), (188, 115168), (236, 91744), (244, 88736), (376, 57584), (472, 45872), (488, 44368), (752, 28792), (944, 22936), (976, 22184), (1504, 14396), (1888, 11468), (1952, 11092), (2773, 7808), (2867, 7552), (3008, 7198), (3599, 6016), (3776, 5734), (3904, 5546)]