19617975

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1$

素因数の和:401

約数の個数: 72

約数和(自身を含む): 39945360

約数和(自身を除く): 20327385

約数列:

[1, 3, 5, 9, 13, 15, 19, 25, 39, 45, 57, 65, 75, 95, 117, 171, 195, 225, 247, 285, 325, 353, 475, 585, 741, 855, 975, 1059, 1235, 1425, 1765, 2223, 2925, 3177, 3705, 4275, 4589, 5295, 6175, 6707, 8825, 11115, 13767, 15885, 18525, 20121, 22945, 26475, 33535, 41301, 55575, 60363, 68835, 79425, 87191, 100605, 114725, 167675, 206505, 261573, 301815, 344175, 435955, 503025, 784719, 1032525, 1307865, 1509075, 2179775, 3923595, 6539325, 19617975]

約数ペア:

[(1, 19617975), (3, 6539325), (5, 3923595), (9, 2179775), (13, 1509075), (15, 1307865), (19, 1032525), (25, 784719), (39, 503025), (45, 435955), (57, 344175), (65, 301815), (75, 261573), (95, 206505), (117, 167675), (171, 114725), (195, 100605), (225, 87191), (247, 79425), (285, 68835), (325, 60363), (353, 55575), (475, 41301), (585, 33535), (741, 26475), (855, 22945), (975, 20121), (1059, 18525), (1235, 15885), (1425, 13767), (1765, 11115), (2223, 8825), (2925, 6707), (3177, 6175), (3705, 5295), (4275, 4589)]