21892940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3389}}^1$

素因数の和:3434

約数の個数: 48

約数和(自身を含む): 51256800

約数和(自身を除く): 29363860

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 3230, 3389, 6460, 6778, 13556, 16945, 33890, 57613, 64391, 67780, 115226, 128782, 230452, 257564, 288065, 321955, 576130, 643910, 1094647, 1152260, 1287820, 2189294, 4378588, 5473235, 10946470, 21892940]

約数ペア:

[(1, 21892940), (2, 10946470), (4, 5473235), (5, 4378588), (10, 2189294), (17, 1287820), (19, 1152260), (20, 1094647), (34, 643910), (38, 576130), (68, 321955), (76, 288065), (85, 257564), (95, 230452), (170, 128782), (190, 115226), (323, 67780), (340, 64391), (380, 57613), (646, 33890), (1292, 16945), (1615, 13556), (3230, 6778), (3389, 6460)]