642460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{353}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 1665216

約数和(自身を除く): 1022756

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 353, 364, 455, 706, 910, 1412, 1765, 1820, 2471, 3530, 4589, 4942, 7060, 9178, 9884, 12355, 18356, 22945, 24710, 32123, 45890, 49420, 64246, 91780, 128492, 160615, 321230, 642460]

約数ペア:

[(1, 642460), (2, 321230), (4, 160615), (5, 128492), (7, 91780), (10, 64246), (13, 49420), (14, 45890), (20, 32123), (26, 24710), (28, 22945), (35, 18356), (52, 12355), (65, 9884), (70, 9178), (91, 7060), (130, 4942), (140, 4589), (182, 3530), (260, 2471), (353, 1820), (364, 1765), (455, 1412), (706, 910)]