31418780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{929}}^1$

素因数の和:1046

約数の個数: 48

約数和(自身を含む): 70308000

約数和(自身を除く): 38889220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 356, 380, 445, 890, 929, 1691, 1780, 1858, 3382, 3716, 4645, 6764, 8455, 9290, 16910, 17651, 18580, 33820, 35302, 70604, 82681, 88255, 165362, 176510, 330724, 353020, 413405, 826810, 1570939, 1653620, 3141878, 6283756, 7854695, 15709390, 31418780]

約数ペア:

[(1, 31418780), (2, 15709390), (4, 7854695), (5, 6283756), (10, 3141878), (19, 1653620), (20, 1570939), (38, 826810), (76, 413405), (89, 353020), (95, 330724), (178, 176510), (190, 165362), (356, 88255), (380, 82681), (445, 70604), (890, 35302), (929, 33820), (1691, 18580), (1780, 17651), (1858, 16910), (3382, 9290), (3716, 8455), (4645, 6764)]