20306325

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{353}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 36872640

約数和(自身を除く): 16566315

約数列:

[1, 3, 5, 13, 15, 25, 39, 59, 65, 75, 177, 195, 295, 325, 353, 767, 885, 975, 1059, 1475, 1765, 2301, 3835, 4425, 4589, 5295, 8825, 11505, 13767, 19175, 20827, 22945, 26475, 57525, 62481, 68835, 104135, 114725, 270751, 312405, 344175, 520675, 812253, 1353755, 1562025, 4061265, 6768775, 20306325]

約数ペア:

[(1, 20306325), (3, 6768775), (5, 4061265), (13, 1562025), (15, 1353755), (25, 812253), (39, 520675), (59, 344175), (65, 312405), (75, 270751), (177, 114725), (195, 104135), (295, 68835), (325, 62481), (353, 57525), (767, 26475), (885, 22945), (975, 20827), (1059, 19175), (1475, 13767), (1765, 11505), (2301, 8825), (3835, 5295), (4425, 4589)]