20927115

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{631}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 40225536

約数和(自身を除く): 19298421

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 67, 99, 165, 201, 335, 495, 603, 631, 737, 1005, 1893, 2211, 3015, 3155, 3685, 5679, 6633, 6941, 9465, 11055, 20823, 28395, 33165, 34705, 42277, 62469, 104115, 126831, 211385, 312345, 380493, 465047, 634155, 1395141, 1902465, 2325235, 4185423, 6975705, 20927115]

約数ペア:

[(1, 20927115), (3, 6975705), (5, 4185423), (9, 2325235), (11, 1902465), (15, 1395141), (33, 634155), (45, 465047), (55, 380493), (67, 312345), (99, 211385), (165, 126831), (201, 104115), (335, 62469), (495, 42277), (603, 34705), (631, 33165), (737, 28395), (1005, 20823), (1893, 11055), (2211, 9465), (3015, 6941), (3155, 6633), (3685, 5679)]