28379775

素因数分解:

$3^1\times 5^2\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 48996864

約数和(自身を除く): 20617089

約数列:

[1, 3, 5, 15, 25, 47, 75, 83, 97, 141, 235, 249, 291, 415, 485, 705, 1175, 1245, 1455, 2075, 2425, 3525, 3901, 4559, 6225, 7275, 8051, 11703, 13677, 19505, 22795, 24153, 40255, 58515, 68385, 97525, 113975, 120765, 201275, 292575, 341925, 378397, 603825, 1135191, 1891985, 5675955, 9459925, 28379775]

約数ペア:

[(1, 28379775), (3, 9459925), (5, 5675955), (15, 1891985), (25, 1135191), (47, 603825), (75, 378397), (83, 341925), (97, 292575), (141, 201275), (235, 120765), (249, 113975), (291, 97525), (415, 68385), (485, 58515), (705, 40255), (1175, 24153), (1245, 22795), (1455, 19505), (2075, 13677), (2425, 11703), (3525, 8051), (3901, 7275), (4559, 6225)]