421774

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1$

素因数の和:251

約数の個数: 16

約数和(自身を含む): 676512

約数和(自身を除く): 254738

約数列:

[1, 2, 23, 46, 53, 106, 173, 346, 1219, 2438, 3979, 7958, 9169, 18338, 210887, 421774]

約数ペア:

[(1, 421774), (2, 210887), (23, 18338), (46, 9169), (53, 7958), (106, 3979), (173, 2438), (346, 1219)]