19957365

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{373}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 36756720

約数和(自身を除く): 16799355

約数列:

[1, 3, 5, 9, 15, 29, 41, 45, 87, 123, 145, 205, 261, 369, 373, 435, 615, 1119, 1189, 1305, 1845, 1865, 3357, 3567, 5595, 5945, 10701, 10817, 15293, 16785, 17835, 32451, 45879, 53505, 54085, 76465, 97353, 137637, 162255, 229395, 443497, 486765, 688185, 1330491, 2217485, 3991473, 6652455, 19957365]

約数ペア:

[(1, 19957365), (3, 6652455), (5, 3991473), (9, 2217485), (15, 1330491), (29, 688185), (41, 486765), (45, 443497), (87, 229395), (123, 162255), (145, 137637), (205, 97353), (261, 76465), (369, 54085), (373, 53505), (435, 45879), (615, 32451), (1119, 17835), (1189, 16785), (1305, 15293), (1845, 10817), (1865, 10701), (3357, 5945), (3567, 5595)]