21163688

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{4153}}^1$

素因数の和:4186

約数の個数: 48

約数和(自身を含む): 49723380

約数和(自身を除く): 28559692

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 182, 196, 364, 392, 637, 728, 1274, 2548, 4153, 5096, 8306, 16612, 29071, 33224, 53989, 58142, 107978, 116284, 203497, 215956, 232568, 377923, 406994, 431912, 755846, 813988, 1511692, 1627976, 2645461, 3023384, 5290922, 10581844, 21163688]

約数ペア:

[(1, 21163688), (2, 10581844), (4, 5290922), (7, 3023384), (8, 2645461), (13, 1627976), (14, 1511692), (26, 813988), (28, 755846), (49, 431912), (52, 406994), (56, 377923), (91, 232568), (98, 215956), (104, 203497), (182, 116284), (196, 107978), (364, 58142), (392, 53989), (637, 33224), (728, 29071), (1274, 16612), (2548, 8306), (4153, 5096)]