19968045

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 32914560

約数和(自身を除く): 12946515

約数列:

[1, 3, 5, 15, 61, 139, 157, 183, 305, 417, 471, 695, 785, 915, 2085, 2355, 8479, 9577, 21823, 25437, 28731, 42395, 47885, 65469, 109115, 127185, 143655, 327345, 1331203, 3993609, 6656015, 19968045]

約数ペア:

[(1, 19968045), (3, 6656015), (5, 3993609), (15, 1331203), (61, 327345), (139, 143655), (157, 127185), (183, 109115), (305, 65469), (417, 47885), (471, 42395), (695, 28731), (785, 25437), (915, 21823), (2085, 9577), (2355, 8479)]