64889890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{617}}^1\times {\mathrm{809}}^1$

素因数の和:1446

約数の個数: 32

約数和(自身を含む): 126146160

約数和(自身を除く): 61256270

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 617, 809, 1234, 1618, 3085, 4045, 6170, 8021, 8090, 10517, 16042, 21034, 40105, 52585, 80210, 105170, 499153, 998306, 2495765, 4991530, 6488989, 12977978, 32444945, 64889890]

約数ペア:

[(1, 64889890), (2, 32444945), (5, 12977978), (10, 6488989), (13, 4991530), (26, 2495765), (65, 998306), (130, 499153), (617, 105170), (809, 80210), (1234, 52585), (1618, 40105), (3085, 21034), (4045, 16042), (6170, 10517), (8021, 8090)]