393993728

素因数分解:

$2^9\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{401}}^1$

素因数の和:539

約数の個数: 80

約数和(自身を含む): 838941840

約数和(自身を除く): 444948112

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 101, 128, 152, 202, 256, 304, 401, 404, 512, 608, 802, 808, 1216, 1604, 1616, 1919, 2432, 3208, 3232, 3838, 4864, 6416, 6464, 7619, 7676, 9728, 12832, 12928, 15238, 15352, 25664, 25856, 30476, 30704, 40501, 51328, 51712, 60952, 61408, 81002, 102656, 121904, 122816, 162004, 205312, 243808, 245632, 324008, 487616, 491264, 648016, 769519, 975232, 982528, 1296032, 1539038, 1950464, 2592064, 3078076, 3900928, 5184128, 6156152, 10368256, 12312304, 20736512, 24624608, 49249216, 98498432, 196996864, 393993728]

約数ペア:

[(1, 393993728), (2, 196996864), (4, 98498432), (8, 49249216), (16, 24624608), (19, 20736512), (32, 12312304), (38, 10368256), (64, 6156152), (76, 5184128), (101, 3900928), (128, 3078076), (152, 2592064), (202, 1950464), (256, 1539038), (304, 1296032), (401, 982528), (404, 975232), (512, 769519), (608, 648016), (802, 491264), (808, 487616), (1216, 324008), (1604, 245632), (1616, 243808), (1919, 205312), (2432, 162004), (3208, 122816), (3232, 121904), (3838, 102656), (4864, 81002), (6416, 61408), (6464, 60952), (7619, 51712), (7676, 51328), (9728, 40501), (12832, 30704), (12928, 30476), (15238, 25856), (15352, 25664)]