21226420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{673}}^1$

素因数の和:784

約数の個数: 48

約数和(自身を含む): 47557440

約数和(自身を除く): 26331020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 83, 95, 166, 190, 332, 380, 415, 673, 830, 1346, 1577, 1660, 2692, 3154, 3365, 6308, 6730, 7885, 12787, 13460, 15770, 25574, 31540, 51148, 55859, 63935, 111718, 127870, 223436, 255740, 279295, 558590, 1061321, 1117180, 2122642, 4245284, 5306605, 10613210, 21226420]

約数ペア:

[(1, 21226420), (2, 10613210), (4, 5306605), (5, 4245284), (10, 2122642), (19, 1117180), (20, 1061321), (38, 558590), (76, 279295), (83, 255740), (95, 223436), (166, 127870), (190, 111718), (332, 63935), (380, 55859), (415, 51148), (673, 31540), (830, 25574), (1346, 15770), (1577, 13460), (1660, 12787), (2692, 7885), (3154, 6730), (3365, 6308)]