30231280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{19889}}^1$

素因数の和:19921

約数の個数: 40

約数和(自身を含む): 73990800

約数和(自身を除く): 43759520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 19889, 39778, 79556, 99445, 159112, 198890, 318224, 377891, 397780, 755782, 795560, 1511564, 1591120, 1889455, 3023128, 3778910, 6046256, 7557820, 15115640, 30231280]

約数ペア:

[(1, 30231280), (2, 15115640), (4, 7557820), (5, 6046256), (8, 3778910), (10, 3023128), (16, 1889455), (19, 1591120), (20, 1511564), (38, 795560), (40, 755782), (76, 397780), (80, 377891), (95, 318224), (152, 198890), (190, 159112), (304, 99445), (380, 79556), (760, 39778), (1520, 19889)]