78328816

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{1999}}^1$

素因数の和:2117

約数の個数: 40

約数和(自身を含む): 158720000

約数和(自身を除く): 80391184

約数列:

[1, 2, 4, 8, 16, 31, 62, 79, 124, 158, 248, 316, 496, 632, 1264, 1999, 2449, 3998, 4898, 7996, 9796, 15992, 19592, 31984, 39184, 61969, 123938, 157921, 247876, 315842, 495752, 631684, 991504, 1263368, 2526736, 4895551, 9791102, 19582204, 39164408, 78328816]

約数ペア:

[(1, 78328816), (2, 39164408), (4, 19582204), (8, 9791102), (16, 4895551), (31, 2526736), (62, 1263368), (79, 991504), (124, 631684), (158, 495752), (248, 315842), (316, 247876), (496, 157921), (632, 123938), (1264, 61969), (1999, 39184), (2449, 31984), (3998, 19592), (4898, 15992), (7996, 9796)]