397841392

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{21491}}^1$

素因数の和:21601

約数の個数: 40

約数和(自身を含む): 839477520

約数和(自身を除く): 441636128

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 89, 104, 178, 208, 356, 712, 1157, 1424, 2314, 4628, 9256, 18512, 21491, 42982, 85964, 171928, 279383, 343856, 558766, 1117532, 1912699, 2235064, 3825398, 4470128, 7650796, 15301592, 24865087, 30603184, 49730174, 99460348, 198920696, 397841392]

約数ペア:

[(1, 397841392), (2, 198920696), (4, 99460348), (8, 49730174), (13, 30603184), (16, 24865087), (26, 15301592), (52, 7650796), (89, 4470128), (104, 3825398), (178, 2235064), (208, 1912699), (356, 1117532), (712, 558766), (1157, 343856), (1424, 279383), (2314, 171928), (4628, 85964), (9256, 42982), (18512, 21491)]