207980540

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1\times {\mathrm{353}}^1$

素因数の和:782

約数の個数: 48

約数和(自身を含む): 444255840

約数和(自身を除く): 236275300

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 331, 353, 356, 445, 662, 706, 890, 1324, 1412, 1655, 1765, 1780, 3310, 3530, 6620, 7060, 29459, 31417, 58918, 62834, 116843, 117836, 125668, 147295, 157085, 233686, 294590, 314170, 467372, 584215, 589180, 628340, 1168430, 2336860, 10399027, 20798054, 41596108, 51995135, 103990270, 207980540]

約数ペア:

[(1, 207980540), (2, 103990270), (4, 51995135), (5, 41596108), (10, 20798054), (20, 10399027), (89, 2336860), (178, 1168430), (331, 628340), (353, 589180), (356, 584215), (445, 467372), (662, 314170), (706, 294590), (890, 233686), (1324, 157085), (1412, 147295), (1655, 125668), (1765, 117836), (1780, 116843), (3310, 62834), (3530, 58918), (6620, 31417), (7060, 29459)]