203905280

素因数分解:

$2^8\times 5^1\times {\mathrm{241}}^1\times {\mathrm{661}}^1$

素因数の和:923

約数の個数: 72

約数和(自身を含む): 491185464

約数和(自身を除く): 287280184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 241, 256, 320, 482, 640, 661, 964, 1205, 1280, 1322, 1928, 2410, 2644, 3305, 3856, 4820, 5288, 6610, 7712, 9640, 10576, 13220, 15424, 19280, 21152, 26440, 30848, 38560, 42304, 52880, 61696, 77120, 84608, 105760, 154240, 159301, 169216, 211520, 308480, 318602, 423040, 637204, 796505, 846080, 1274408, 1593010, 2548816, 3186020, 5097632, 6372040, 10195264, 12744080, 20390528, 25488160, 40781056, 50976320, 101952640, 203905280]

約数ペア:

[(1, 203905280), (2, 101952640), (4, 50976320), (5, 40781056), (8, 25488160), (10, 20390528), (16, 12744080), (20, 10195264), (32, 6372040), (40, 5097632), (64, 3186020), (80, 2548816), (128, 1593010), (160, 1274408), (241, 846080), (256, 796505), (320, 637204), (482, 423040), (640, 318602), (661, 308480), (964, 211520), (1205, 169216), (1280, 159301), (1322, 154240), (1928, 105760), (2410, 84608), (2644, 77120), (3305, 61696), (3856, 52880), (4820, 42304), (5288, 38560), (6610, 30848), (7712, 26440), (9640, 21152), (10576, 19280), (13220, 15424)]