21287916

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^2\times {\mathrm{3499}}^1$

素因数の和:3535

約数の個数: 54

約数和(自身を含む): 58285500

約数和(自身を除く): 36997584

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 169, 234, 338, 468, 507, 676, 1014, 1521, 2028, 3042, 3499, 6084, 6998, 10497, 13996, 20994, 31491, 41988, 45487, 62982, 90974, 125964, 136461, 181948, 272922, 409383, 545844, 591331, 818766, 1182662, 1637532, 1773993, 2365324, 3547986, 5321979, 7095972, 10643958, 21287916]

約数ペア:

[(1, 21287916), (2, 10643958), (3, 7095972), (4, 5321979), (6, 3547986), (9, 2365324), (12, 1773993), (13, 1637532), (18, 1182662), (26, 818766), (36, 591331), (39, 545844), (52, 409383), (78, 272922), (117, 181948), (156, 136461), (169, 125964), (234, 90974), (338, 62982), (468, 45487), (507, 41988), (676, 31491), (1014, 20994), (1521, 13996), (2028, 10497), (3042, 6998), (3499, 6084)]