20005908

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{499}}^1$

素因数の和:776

約数の個数: 48

約数和(自身を含む): 50568000

約数和(自身を除く): 30562092

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 257, 499, 514, 771, 998, 1028, 1497, 1542, 1996, 2994, 3084, 3341, 5988, 6487, 6682, 10023, 12974, 13364, 19461, 20046, 25948, 38922, 40092, 77844, 128243, 256486, 384729, 512972, 769458, 1538916, 1667159, 3334318, 5001477, 6668636, 10002954, 20005908]

約数ペア:

[(1, 20005908), (2, 10002954), (3, 6668636), (4, 5001477), (6, 3334318), (12, 1667159), (13, 1538916), (26, 769458), (39, 512972), (52, 384729), (78, 256486), (156, 128243), (257, 77844), (499, 40092), (514, 38922), (771, 25948), (998, 20046), (1028, 19461), (1497, 13364), (1542, 12974), (1996, 10023), (2994, 6682), (3084, 6487), (3341, 5988)]