131155840

素因数分解:

$2^7\times 5^1\times {\mathrm{204931}}^1$

素因数の和:204950

約数の個数: 32

約数和(自身を含む): 313545960

約数和(自身を除く): 182390120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 204931, 409862, 819724, 1024655, 1639448, 2049310, 3278896, 4098620, 6557792, 8197240, 13115584, 16394480, 26231168, 32788960, 65577920, 131155840]

約数ペア:

[(1, 131155840), (2, 65577920), (4, 32788960), (5, 26231168), (8, 16394480), (10, 13115584), (16, 8197240), (20, 6557792), (32, 4098620), (40, 3278896), (64, 2049310), (80, 1639448), (128, 1024655), (160, 819724), (320, 409862), (640, 204931)]