20438194900

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{563}}^1\times {\mathrm{5113}}^1$

素因数の和:5761

約数の個数: 72

約数和(自身を含む): 45064240704

約数和(自身を除く): 24626045804

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 142, 284, 355, 563, 710, 1126, 1420, 1775, 2252, 2815, 3550, 5113, 5630, 7100, 10226, 11260, 14075, 20452, 25565, 28150, 39973, 51130, 56300, 79946, 102260, 127825, 159892, 199865, 255650, 363023, 399730, 511300, 726046, 799460, 999325, 1452092, 1815115, 1998650, 2878619, 3630230, 3997300, 5757238, 7260460, 9075575, 11514476, 14393095, 18151150, 28786190, 36302300, 57572380, 71965475, 143930950, 204381949, 287861900, 408763898, 817527796, 1021909745, 2043819490, 4087638980, 5109548725, 10219097450, 20438194900]

約数ペア:

[(1, 20438194900), (2, 10219097450), (4, 5109548725), (5, 4087638980), (10, 2043819490), (20, 1021909745), (25, 817527796), (50, 408763898), (71, 287861900), (100, 204381949), (142, 143930950), (284, 71965475), (355, 57572380), (563, 36302300), (710, 28786190), (1126, 18151150), (1420, 14393095), (1775, 11514476), (2252, 9075575), (2815, 7260460), (3550, 5757238), (5113, 3997300), (5630, 3630230), (7100, 2878619), (10226, 1998650), (11260, 1815115), (14075, 1452092), (20452, 999325), (25565, 799460), (28150, 726046), (39973, 511300), (51130, 399730), (56300, 363023), (79946, 255650), (102260, 199865), (127825, 159892)]