64851280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{491}}^1$

素因数の和:644

約数の個数: 80

約数和(自身を含む): 163989504

約数和(自身を除く): 99138224

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 127, 130, 208, 254, 260, 491, 508, 520, 635, 982, 1016, 1040, 1270, 1651, 1964, 2032, 2455, 2540, 3302, 3928, 4910, 5080, 6383, 6604, 7856, 8255, 9820, 10160, 12766, 13208, 16510, 19640, 25532, 26416, 31915, 33020, 39280, 51064, 62357, 63830, 66040, 102128, 124714, 127660, 132080, 249428, 255320, 311785, 498856, 510640, 623570, 810641, 997712, 1247140, 1621282, 2494280, 3242564, 4053205, 4988560, 6485128, 8106410, 12970256, 16212820, 32425640, 64851280]

約数ペア:

[(1, 64851280), (2, 32425640), (4, 16212820), (5, 12970256), (8, 8106410), (10, 6485128), (13, 4988560), (16, 4053205), (20, 3242564), (26, 2494280), (40, 1621282), (52, 1247140), (65, 997712), (80, 810641), (104, 623570), (127, 510640), (130, 498856), (208, 311785), (254, 255320), (260, 249428), (491, 132080), (508, 127660), (520, 124714), (635, 102128), (982, 66040), (1016, 63830), (1040, 62357), (1270, 51064), (1651, 39280), (1964, 33020), (2032, 31915), (2455, 26416), (2540, 25532), (3302, 19640), (3928, 16510), (4910, 13208), (5080, 12766), (6383, 10160), (6604, 9820), (7856, 8255)]