99997976

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{1999}}^1$

素因数の和:2068

約数の個数: 48

約数和(自身を含む): 208620000

約数和(自身を除く): 108622024

約数列:

[1, 2, 4, 8, 13, 26, 37, 52, 74, 104, 148, 169, 296, 338, 481, 676, 962, 1352, 1924, 1999, 3848, 3998, 6253, 7996, 12506, 15992, 25012, 25987, 50024, 51974, 73963, 103948, 147926, 207896, 295852, 337831, 591704, 675662, 961519, 1351324, 1923038, 2702648, 3846076, 7692152, 12499747, 24999494, 49998988, 99997976]

約数ペア:

[(1, 99997976), (2, 49998988), (4, 24999494), (8, 12499747), (13, 7692152), (26, 3846076), (37, 2702648), (52, 1923038), (74, 1351324), (104, 961519), (148, 675662), (169, 591704), (296, 337831), (338, 295852), (481, 207896), (676, 147926), (962, 103948), (1352, 73963), (1924, 51974), (1999, 50024), (3848, 25987), (3998, 25012), (6253, 15992), (7996, 12506)]