21899115

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3659}}^1$

素因数の和:3696

約数の個数: 48

約数和(自身を含む): 45676800

約数和(自身を除く): 23777685

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3659, 5985, 10977, 18295, 25613, 32931, 54885, 69521, 76839, 128065, 164655, 208563, 230517, 347605, 384195, 486647, 625689, 1042815, 1152585, 1459941, 2433235, 3128445, 4379823, 7299705, 21899115]

約数ペア:

[(1, 21899115), (3, 7299705), (5, 4379823), (7, 3128445), (9, 2433235), (15, 1459941), (19, 1152585), (21, 1042815), (35, 625689), (45, 486647), (57, 384195), (63, 347605), (95, 230517), (105, 208563), (133, 164655), (171, 128065), (285, 76839), (315, 69521), (399, 54885), (665, 32931), (855, 25613), (1197, 18295), (1995, 10977), (3659, 5985)]