281426990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{69833}}^1$

素因数の和:69884

約数の個数: 32

約数和(自身を含む): 563141376

約数和(自身を除く): 281714386

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 69833, 139666, 349165, 698330, 907829, 1815658, 2164823, 4329646, 4539145, 9078290, 10824115, 21648230, 28142699, 56285398, 140713495, 281426990]

約数ペア:

[(1, 281426990), (2, 140713495), (5, 56285398), (10, 28142699), (13, 21648230), (26, 10824115), (31, 9078290), (62, 4539145), (65, 4329646), (130, 2164823), (155, 1815658), (310, 907829), (403, 698330), (806, 349165), (2015, 139666), (4030, 69833)]