254180480

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20903}}^1$

素因数の和:20941

約数の個数: 64

約数和(自身を含む): 639662400

約数和(自身を除く): 385481920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 304, 320, 380, 608, 640, 760, 1216, 1520, 2432, 3040, 6080, 12160, 20903, 41806, 83612, 104515, 167224, 209030, 334448, 397157, 418060, 668896, 794314, 836120, 1337792, 1588628, 1672240, 1985785, 2675584, 3177256, 3344480, 3971570, 6354512, 6688960, 7943140, 12709024, 13377920, 15886280, 25418048, 31772560, 50836096, 63545120, 127090240, 254180480]

約数ペア:

[(1, 254180480), (2, 127090240), (4, 63545120), (5, 50836096), (8, 31772560), (10, 25418048), (16, 15886280), (19, 13377920), (20, 12709024), (32, 7943140), (38, 6688960), (40, 6354512), (64, 3971570), (76, 3344480), (80, 3177256), (95, 2675584), (128, 1985785), (152, 1672240), (160, 1588628), (190, 1337792), (304, 836120), (320, 794314), (380, 668896), (608, 418060), (640, 397157), (760, 334448), (1216, 209030), (1520, 167224), (2432, 104515), (3040, 83612), (6080, 41806), (12160, 20903)]