400347890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{353}}^1\times {\mathrm{4931}}^1$

素因数の和:5314

約数の個数: 32

約数和(自身を含む): 754240896

約数和(自身を除く): 353893006

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 353, 706, 1765, 3530, 4931, 8119, 9862, 16238, 24655, 40595, 49310, 81190, 113413, 226826, 567065, 1134130, 1740643, 3481286, 8703215, 17406430, 40034789, 80069578, 200173945, 400347890]

約数ペア:

[(1, 400347890), (2, 200173945), (5, 80069578), (10, 40034789), (23, 17406430), (46, 8703215), (115, 3481286), (230, 1740643), (353, 1134130), (706, 567065), (1765, 226826), (3530, 113413), (4931, 81190), (8119, 49310), (9862, 40595), (16238, 24655)]