22720355

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 32514048

約数和(自身を除く): 9793693

約数列:

[1, 5, 7, 35, 41, 71, 205, 223, 287, 355, 497, 1115, 1435, 1561, 2485, 2911, 7805, 9143, 14555, 15833, 20377, 45715, 64001, 79165, 101885, 110831, 320005, 554155, 649153, 3245765, 4544071, 22720355]

約数ペア:

[(1, 22720355), (5, 4544071), (7, 3245765), (35, 649153), (41, 554155), (71, 320005), (205, 110831), (223, 101885), (287, 79165), (355, 64001), (497, 45715), (1115, 20377), (1435, 15833), (1561, 14555), (2485, 9143), (2911, 7805)]