289809920

素因数分解:

$2^9\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1433}}^1$

素因数の和:1535

約数の個数: 80

約数和(自身を含む): 704151360

約数和(自身を除く): 414341440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 395, 512, 632, 640, 790, 1264, 1280, 1433, 1580, 2528, 2560, 2866, 3160, 5056, 5732, 6320, 7165, 10112, 11464, 12640, 14330, 20224, 22928, 25280, 28660, 40448, 45856, 50560, 57320, 91712, 101120, 113207, 114640, 183424, 202240, 226414, 229280, 366848, 452828, 458560, 566035, 733696, 905656, 917120, 1132070, 1811312, 1834240, 2264140, 3622624, 3668480, 4528280, 7245248, 9056560, 14490496, 18113120, 28980992, 36226240, 57961984, 72452480, 144904960, 289809920]

約数ペア:

[(1, 289809920), (2, 144904960), (4, 72452480), (5, 57961984), (8, 36226240), (10, 28980992), (16, 18113120), (20, 14490496), (32, 9056560), (40, 7245248), (64, 4528280), (79, 3668480), (80, 3622624), (128, 2264140), (158, 1834240), (160, 1811312), (256, 1132070), (316, 917120), (320, 905656), (395, 733696), (512, 566035), (632, 458560), (640, 452828), (790, 366848), (1264, 229280), (1280, 226414), (1433, 202240), (1580, 183424), (2528, 114640), (2560, 113207), (2866, 101120), (3160, 91712), (5056, 57320), (5732, 50560), (6320, 45856), (7165, 40448), (10112, 28660), (11464, 25280), (12640, 22928), (14330, 20224)]