1284920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{353}}^1$

素因数の和:384

約数の個数: 64

約数和(自身を含む): 3568320

約数和(自身を除く): 2283400

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 353, 364, 455, 520, 706, 728, 910, 1412, 1765, 1820, 2471, 2824, 3530, 3640, 4589, 4942, 7060, 9178, 9884, 12355, 14120, 18356, 19768, 22945, 24710, 32123, 36712, 45890, 49420, 64246, 91780, 98840, 128492, 160615, 183560, 256984, 321230, 642460, 1284920]

約数ペア:

[(1, 1284920), (2, 642460), (4, 321230), (5, 256984), (7, 183560), (8, 160615), (10, 128492), (13, 98840), (14, 91780), (20, 64246), (26, 49420), (28, 45890), (35, 36712), (40, 32123), (52, 24710), (56, 22945), (65, 19768), (70, 18356), (91, 14120), (104, 12355), (130, 9884), (140, 9178), (182, 7060), (260, 4942), (280, 4589), (353, 3640), (364, 3530), (455, 2824), (520, 2471), (706, 1820), (728, 1765), (910, 1412)]