19019620

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{239}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 42094080

約数和(自身を除く): 23074460

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 173, 230, 239, 346, 460, 478, 692, 865, 956, 1195, 1730, 2390, 3460, 3979, 4780, 5497, 7958, 10994, 15916, 19895, 21988, 27485, 39790, 41347, 54970, 79580, 82694, 109940, 165388, 206735, 413470, 826940, 950981, 1901962, 3803924, 4754905, 9509810, 19019620]

約数ペア:

[(1, 19019620), (2, 9509810), (4, 4754905), (5, 3803924), (10, 1901962), (20, 950981), (23, 826940), (46, 413470), (92, 206735), (115, 165388), (173, 109940), (230, 82694), (239, 79580), (346, 54970), (460, 41347), (478, 39790), (692, 27485), (865, 21988), (956, 19895), (1195, 15916), (1730, 10994), (2390, 7958), (3460, 5497), (3979, 4780)]